diff --git a/pcb_calculator/bitmaps/sources/attenuator/att_bridge.png b/pcb_calculator/bitmaps/sources/attenuator/att_bridge.png
deleted file mode 100644
index 60c3153e56..0000000000
Binary files a/pcb_calculator/bitmaps/sources/attenuator/att_bridge.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/attenuator/att_pi.png b/pcb_calculator/bitmaps/sources/attenuator/att_pi.png
deleted file mode 100644
index aa29ca2b3d..0000000000
Binary files a/pcb_calculator/bitmaps/sources/attenuator/att_pi.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/attenuator/att_splitter.png b/pcb_calculator/bitmaps/sources/attenuator/att_splitter.png
deleted file mode 100644
index 87bf9a2383..0000000000
Binary files a/pcb_calculator/bitmaps/sources/attenuator/att_splitter.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/attenuator/att_tee.png b/pcb_calculator/bitmaps/sources/attenuator/att_tee.png
deleted file mode 100644
index fe1a9280e0..0000000000
Binary files a/pcb_calculator/bitmaps/sources/attenuator/att_tee.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/attenuator/regul.png b/pcb_calculator/bitmaps/sources/attenuator/regul.png
deleted file mode 100644
index 5b207c1ba1..0000000000
Binary files a/pcb_calculator/bitmaps/sources/attenuator/regul.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/attenuator_PI.png b/pcb_calculator/bitmaps/sources/attenuator_PI.png
deleted file mode 100644
index 11b15a5b8e..0000000000
Binary files a/pcb_calculator/bitmaps/sources/attenuator_PI.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/regul.svg b/pcb_calculator/bitmaps/sources/regul.svg
deleted file mode 100644
index 11a8cb7183..0000000000
--- a/pcb_calculator/bitmaps/sources/regul.svg
+++ /dev/null
@@ -1,231 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="256"
-   height="150"
-   id="svg2"
-   version="1.1"
-   inkscape:version="0.48.1 "
-   sodipodi:docname="regul.svg"
-   inkscape:export-filename="F:\kicad-launchpad\mytesting\pcb_calculator\bitmaps\sources\regul.png"
-   inkscape:export-xdpi="90"
-   inkscape:export-ydpi="90">
-  <defs
-     id="defs4" />
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0.0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="3.0195312"
-     inkscape:cx="128"
-     inkscape:cy="122.0007"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="true"
-     inkscape:window-width="1280"
-     inkscape:window-height="968"
-     inkscape:window-x="-4"
-     inkscape:window-y="-4"
-     inkscape:window-maximized="1">
-    <inkscape:grid
-       type="xygrid"
-       id="grid3769"
-       empspacing="5"
-       visible="true"
-       enabled="true"
-       snapvisiblegridlinesonly="true" />
-  </sodipodi:namedview>
-  <metadata
-     id="metadata7">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Calque 1"
-     inkscape:groupmode="layer"
-     id="layer1"
-     transform="translate(0,-902.36218)">
-    <rect
-       style="fill:#f2f274;fill-opacity:1;stroke:#0000ff;stroke-width:2.70856905;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       id="rect3757"
-       width="100"
-       height="90"
-       x="45"
-       y="917.36218"
-       rx="0.46518731"
-       ry="0.770051" />
-    <path
-       style="fill:none;stroke:#0000ff;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:2;stroke-opacity:1;stroke-dasharray:none"
-       d="m 5.7075806,932.36216 39.0660404,0 0.601016,0"
-       id="path3767"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 145,932.36216 109.03021,0 1.67737,0"
-       id="path3767-5"
-       inkscape:connector-curvature="0" />
-    <text
-       xml:space="preserve"
-       style="font-size:25.21309471px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#800000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="160.62158"
-       y="927.8587"
-       id="text3789"
-       sodipodi:linespacing="125%"
-       transform="scale(1.0005354,0.99946488)"><tspan
-         sodipodi:role="line"
-         id="tspan3791"
-         x="160.62158"
-         y="927.8587"
-         style="fill:#800000;fill-opacity:1;stroke:none">VOUT</tspan></text>
-    <flowRoot
-       xml:space="preserve"
-       id="flowRoot3793"
-       style="font-size:14px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       transform="translate(0,924.36218)"><flowRegion
-         id="flowRegion3795"><rect
-           id="rect3797"
-           width="69.019989"
-           height="28.36969"
-           x="320.98001"
-           y="-580.36969" /></flowRegion><flowPara
-         id="flowPara3799" /></flowRoot>    <flowRoot
-       xml:space="preserve"
-       id="flowRoot3801"
-       style="font-size:14px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       transform="translate(0,924.36218)"><flowRegion
-         id="flowRegion3803"><rect
-           id="rect3805"
-           width="133.74167"
-           height="52.57431"
-           x="315.44586"
-           y="-596.97211" /></flowRegion><flowPara
-         id="flowPara3807" /></flowRoot>    <text
-       xml:space="preserve"
-       style="font-size:25.66092873px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#3729c3;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="1.4928155"
-       y="944.83636"
-       id="text3789-2"
-       sodipodi:linespacing="125%"
-       transform="scale(1.0183069,0.98202221)"><tspan
-         sodipodi:role="line"
-         id="tspan3791-3"
-         x="1.4928155"
-         y="944.83636"
-         style="fill:#3729c3;fill-opacity:1;stroke:none">Vin</tspan></text>
-    <path
-       style="fill:none;stroke:#0000ff;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 90.000001,1007.3622 0,35 0,0"
-       id="path3830"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:none;stroke:#000000;stroke-width:3;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 80.000001,1042.3622 20.166509,0 0,0"
-       id="path3832"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:2;stroke-opacity:1;stroke-dasharray:none"
-       d="m 145.70758,987.36218 49.29242,0 0.75833,0"
-       id="path3767-5-1"
-       inkscape:connector-curvature="0" />
-    <rect
-       style="fill:#f3f36e;fill-opacity:1;stroke:#800000;stroke-width:2;stroke-linecap:square;stroke-linejoin:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0"
-       id="rect3898"
-       width="20"
-       height="40"
-       x="185"
-       y="942.36218"
-       rx="0.46518731"
-       ry="0.68448979" />
-    <rect
-       style="fill:#f2f26c;fill-opacity:1;stroke:#800000;stroke-width:2;stroke-linecap:square;stroke-linejoin:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0"
-       id="rect3898-6"
-       width="20"
-       height="40"
-       x="185"
-       y="992.36218"
-       rx="0.46518731"
-       ry="0.68448979" />
-    <text
-       xml:space="preserve"
-       style="font-size:22.56652641px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#800000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="240.08633"
-       y="866.28369"
-       id="text3789-8"
-       sodipodi:linespacing="125%"
-       transform="scale(0.89551121,1.1166806)"><tspan
-         sodipodi:role="line"
-         id="tspan3791-8"
-         x="240.08633"
-         y="866.28369"
-         style="fill:#800000;fill-opacity:1;stroke:none">R1</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:22.56652641px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#800000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="240.08633"
-       y="911.0592"
-       id="text3789-8-2"
-       sodipodi:linespacing="125%"
-       transform="scale(0.89551121,1.1166806)"><tspan
-         sodipodi:role="line"
-         id="tspan3791-8-7"
-         x="240.08633"
-         y="911.0592"
-         style="fill:#800000;fill-opacity:1;stroke:none">R2</tspan></text>
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 195,932.36216 0,10 0,0"
-       id="path3960"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 195,982.36216 0,10.00002 0,0"
-       id="path3960-7"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 195,1032.3622 0,10 0,0"
-       id="path3960-1"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:none;stroke:#000000;stroke-width:3;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 184.83349,1042.3622 20.16651,0 0,0"
-       id="path3832-2"
-       inkscape:connector-curvature="0" />
-    <text
-       xml:space="preserve"
-       style="font-size:26.76031494px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#800000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="80.369926"
-       y="1059.1328"
-       id="text3789-6"
-       sodipodi:linespacing="125%"
-       transform="scale(1.061934,0.9416781)"><tspan
-         sodipodi:role="line"
-         id="tspan3791-0"
-         x="80.369926"
-         y="1059.1328"
-         style="fill:#800000;fill-opacity:1;stroke:none">Vref</tspan></text>
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 245.70758,922.36218 10,10 -10,10 z"
-       id="path3794"
-       inkscape:connector-curvature="0" />
-  </g>
-</svg>
diff --git a/pcb_calculator/bitmaps/sources/regul_3pins.png b/pcb_calculator/bitmaps/sources/regul_3pins.png
deleted file mode 100644
index 4eb59b2973..0000000000
Binary files a/pcb_calculator/bitmaps/sources/regul_3pins.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/regul_3pins.svg b/pcb_calculator/bitmaps/sources/regul_3pins.svg
deleted file mode 100644
index ffc5992a76..0000000000
--- a/pcb_calculator/bitmaps/sources/regul_3pins.svg
+++ /dev/null
@@ -1,229 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="256"
-   height="200"
-   id="svg2"
-   version="1.1"
-   inkscape:version="0.48.1 "
-   sodipodi:docname="regul_3pins.svg"
-   inkscape:export-filename="F:\kicad-launchpad\testing\pcb_calculator\bitmaps\sources\regul_3pins.png"
-   inkscape:export-xdpi="90"
-   inkscape:export-ydpi="90">
-  <defs
-     id="defs4" />
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0.0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="3.0195312"
-     inkscape:cx="75.011642"
-     inkscape:cy="108.75361"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="true"
-     inkscape:window-width="1280"
-     inkscape:window-height="968"
-     inkscape:window-x="-4"
-     inkscape:window-y="-4"
-     inkscape:window-maximized="1">
-    <inkscape:grid
-       type="xygrid"
-       id="grid3769"
-       empspacing="5"
-       visible="true"
-       enabled="true"
-       snapvisiblegridlinesonly="true" />
-  </sodipodi:namedview>
-  <metadata
-     id="metadata7">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Calque 1"
-     inkscape:groupmode="layer"
-     id="layer1"
-     transform="translate(0,-852.36218)">
-    <rect
-       style="fill:#f2f274;fill-opacity:1;stroke:#0000ff;stroke-width:2.70856905;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       id="rect3757"
-       width="100"
-       height="90"
-       x="45"
-       y="872.36218"
-       rx="0.46518731"
-       ry="0.770051" />
-    <path
-       style="fill:none;stroke:#0000ff;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:2;stroke-opacity:1;stroke-dasharray:none"
-       d="m 5.7075806,887.36218 39.0660404,0 0.601016,0"
-       id="path3767"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 145,887.36218 109.03021,0 1.67737,0"
-       id="path3767-5"
-       inkscape:connector-curvature="0" />
-    <text
-       xml:space="preserve"
-       style="font-size:25.21309471px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#800000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="160.62158"
-       y="882.83466"
-       id="text3789"
-       sodipodi:linespacing="125%"
-       transform="scale(1.0005354,0.99946488)"><tspan
-         sodipodi:role="line"
-         id="tspan3791"
-         x="160.62158"
-         y="882.83466"
-         style="fill:#800000;fill-opacity:1;stroke:none">VOUT</tspan></text>
-    <flowRoot
-       xml:space="preserve"
-       id="flowRoot3793"
-       style="font-size:14px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       transform="translate(0,924.36218)"><flowRegion
-         id="flowRegion3795"><rect
-           id="rect3797"
-           width="69.019989"
-           height="28.36969"
-           x="320.98001"
-           y="-580.36969" /></flowRegion><flowPara
-         id="flowPara3799" /></flowRoot>    <flowRoot
-       xml:space="preserve"
-       id="flowRoot3801"
-       style="font-size:14px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       transform="translate(0,924.36218)"><flowRegion
-         id="flowRegion3803"><rect
-           id="rect3805"
-           width="133.74167"
-           height="52.57431"
-           x="315.44586"
-           y="-596.97211" /></flowRegion><flowPara
-         id="flowPara3807" /></flowRoot>    <text
-       xml:space="preserve"
-       style="font-size:25.66092873px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#3729c3;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="1.4928155"
-       y="899.01257"
-       id="text3789-2"
-       sodipodi:linespacing="125%"
-       transform="scale(1.0183069,0.98202221)"><tspan
-         sodipodi:role="line"
-         id="tspan3791-3"
-         x="1.4928155"
-         y="899.01257"
-         style="fill:#3729c3;fill-opacity:1;stroke:none">Vin</tspan></text>
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:2;stroke-opacity:1;stroke-dasharray:none"
-       d="m 95,977.36218 100.21655,1e-5 0.54178,0"
-       id="path3767-5-1"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="ccc" />
-    <rect
-       style="fill:#f3f36e;fill-opacity:1;stroke:#800000;stroke-width:2;stroke-linecap:square;stroke-linejoin:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0"
-       id="rect3898"
-       width="20"
-       height="40"
-       x="185"
-       y="897.36218"
-       rx="0.46518731"
-       ry="0.68448979" />
-    <rect
-       style="fill:#f2f26c;fill-opacity:1;stroke:#800000;stroke-width:2;stroke-linecap:square;stroke-linejoin:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0"
-       id="rect3898-6"
-       width="20"
-       height="40"
-       x="185"
-       y="982.36218"
-       rx="0.46518731"
-       ry="0.68448979" />
-    <text
-       xml:space="preserve"
-       style="font-size:22.56652641px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#800000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="240.08633"
-       y="825.98572"
-       id="text3789-8"
-       sodipodi:linespacing="125%"
-       transform="scale(0.89551121,1.1166806)"><tspan
-         sodipodi:role="line"
-         id="tspan3791-8"
-         x="240.08633"
-         y="825.98572"
-         style="fill:#800000;fill-opacity:1;stroke:none">R1</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:22.56652641px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#800000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="240.08633"
-       y="902.10413"
-       id="text3789-8-2"
-       sodipodi:linespacing="125%"
-       transform="scale(0.89551121,1.1166806)"><tspan
-         sodipodi:role="line"
-         id="tspan3791-8-7"
-         x="240.08633"
-         y="902.10413"
-         style="fill:#800000;fill-opacity:1;stroke:none">R2</tspan></text>
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 195,887.36218 0,10 0,0"
-       id="path3960"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 195,937.36218 0,10.00002 0,34.99998"
-       id="path3960-7"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="ccc" />
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 195,1022.3622 0,10 0,0"
-       id="path3960-1"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:none;stroke:#000000;stroke-width:3;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 184.83349,1032.3622 20.16651,0 0,0"
-       id="path3832-2"
-       inkscape:connector-curvature="0" />
-    <text
-       xml:space="preserve"
-       style="font-size:26.76031494px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#800000;fill-opacity:1;stroke:none;font-family:Bitstream Vera Sans"
-       x="65.917465"
-       y="1016.6555"
-       id="text3789-6"
-       sodipodi:linespacing="125%"
-       transform="scale(1.061934,0.9416781)"><tspan
-         sodipodi:role="line"
-         id="tspan3791-0"
-         x="65.917465"
-         y="1016.6555"
-         style="fill:#800000;fill-opacity:1;stroke:none">ADJ</tspan></text>
-    <path
-       style="fill:#800000;stroke:#800000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 245.70758,877.3622 10,10 -10,10 z"
-       id="path3794"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:none;stroke:#800000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-       d="m 95,962.3622 0,14.99998"
-       id="path3032"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="cc" />
-  </g>
-</svg>
diff --git a/pcb_calculator/bitmaps/sources/transline/c_microstrip.png b/pcb_calculator/bitmaps/sources/transline/c_microstrip.png
deleted file mode 100644
index 7e3cf79306..0000000000
Binary files a/pcb_calculator/bitmaps/sources/transline/c_microstrip.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/transline/coax.png b/pcb_calculator/bitmaps/sources/transline/coax.png
deleted file mode 100644
index 78d098aba9..0000000000
Binary files a/pcb_calculator/bitmaps/sources/transline/coax.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/transline/cpw.png b/pcb_calculator/bitmaps/sources/transline/cpw.png
deleted file mode 100644
index a92c6e62df..0000000000
Binary files a/pcb_calculator/bitmaps/sources/transline/cpw.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/transline/cpw_back.png b/pcb_calculator/bitmaps/sources/transline/cpw_back.png
deleted file mode 100644
index b7c5b28ef4..0000000000
Binary files a/pcb_calculator/bitmaps/sources/transline/cpw_back.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/transline/microstrip.png b/pcb_calculator/bitmaps/sources/transline/microstrip.png
deleted file mode 100644
index 6132fd5dc9..0000000000
Binary files a/pcb_calculator/bitmaps/sources/transline/microstrip.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/transline/microstrip_zodd_zeven.svg b/pcb_calculator/bitmaps/sources/transline/microstrip_zodd_zeven.svg
deleted file mode 100644
index deda4a287b..0000000000
--- a/pcb_calculator/bitmaps/sources/transline/microstrip_zodd_zeven.svg
+++ /dev/null
@@ -1,344 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:osb="http://www.openswatchbook.org/uri/2009/osb"
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="240"
-   height="104"
-   id="svg2"
-   version="1.1"
-   inkscape:version="0.48.4 r9939"
-   sodipodi:docname="microstrip_zodd_zeven.svg"
-   inkscape:export-filename="E:\kicad-launchpad\testing\pcb_calculator\bitmaps\microstrip_zodd_zeven.png"
-   inkscape:export-xdpi="90"
-   inkscape:export-ydpi="90">
-  <defs
-     id="defs4">
-    <linearGradient
-       id="linearGradient3779"
-       osb:paint="solid">
-      <stop
-         style="stop-color:#f90000;stop-opacity:1;"
-         offset="0"
-         id="stop3781" />
-    </linearGradient>
-    <inkscape:perspective
-       sodipodi:type="inkscape:persp3d"
-       inkscape:vp_x="-0.58520904 : 33.942123 : 1"
-       inkscape:vp_y="0 : 1000 : 0"
-       inkscape:vp_z="47.401929 : 40.797428 : 1"
-       inkscape:persp3d-origin="21.401929 : 32.130761 : 1"
-       id="perspective2985" />
-  </defs>
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0.0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="5.6083333"
-     inkscape:cx="120"
-     inkscape:cy="59.132244"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     inkscape:window-width="1446"
-     inkscape:window-height="842"
-     inkscape:window-x="223"
-     inkscape:window-y="171"
-     inkscape:window-maximized="0"
-     showborder="true"
-     inkscape:showpageshadow="false" />
-  <metadata
-     id="metadata7">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Calque 1"
-     inkscape:groupmode="layer"
-     id="layer1"
-     transform="translate(0,-948.3622)">
-    <g
-       id="g3037"
-       transform="matrix(2.0058991,0,0,2.1735333,-0.01245482,-1227.6881)"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90">
-      <path
-         sodipodi:nodetypes="cccccc"
-         inkscape:connector-curvature="0"
-         id="path3012"
-         d="m 0.51238178,1047.6176 c 39.84853122,0.2975 39.06036222,-0.099 39.06036222,-0.099 l -0.199288,0.1992 14.946567,-22.1209 -34.078173,0.4983 z"
-         style="fill:#828282;fill-opacity:1;stroke:#000000;stroke-width:1;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-      <g
-         transform="matrix(1,0,0,0.73291858,-8.4471144,278.0582)"
-         id="g5003">
-        <g
-           id="g4999"
-           transform="translate(0.35229396,-10.216525)">
-          <path
-             style="fill:#0017aa;fill-opacity:1;stroke:#9b001b;stroke-width:2.35320044;stroke-linecap:square;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none"
-             inkscape:connector-curvature="0"
-             d="m 19.619655,1051.261 -0.0379,-10.6898"
-             id="path4835-5-1" />
-          <path
-             style="fill:#9b001b;fill-opacity:1;stroke:#9b001b;stroke-width:0.50915164;stroke-linecap:square;stroke-linejoin:bevel;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none"
-             inkscape:connector-curvature="0"
-             d="m 19.650366,1036.3564 2.924609,5.3618 -5.646349,-0.079 z"
-             id="path4839-8-4" />
-        </g>
-        <path
-           id="path4835-5-1-9"
-           d="m 22.763027,1043.3097 -5.857755,0.068"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#9b001b;stroke-width:2.32358861;stroke-linecap:square;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-      </g>
-      <g
-         transform="translate(3.4824157,-1.8132564)"
-         id="g3840">
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 0.44700789,1027.4531 15.09099111,-0.1708 0.03477,4.4259 -15.0487657,0 z"
-           id="path3805"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 15.232526,1012.5609 13.47153,0.1239 -13.172244,14.7178 -15.04876558,0 z"
-           id="path3805-3"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 15.488268,1027.5787 13.215609,-14.9388 0.0093,3.927 -13.147894,15.0997 z"
-           id="path3805-1"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-      </g>
-      <g
-         transform="translate(25.440502,-1.7884083)"
-         id="g3840-4">
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 0.44700789,1027.4531 15.09099111,-0.1708 0.03477,4.4259 -15.0487657,0 z"
-           id="path3805-6"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 14.38702,1012.7018 13.260154,0.053 -12.115362,14.6473 -15.04876558,0 z"
-           id="path3805-3-0"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 15.488268,1027.5787 12.088268,-14.9388 -0.272535,3.9975 -11.738718,15.0292 z"
-           id="path3805-1-3"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-      </g>
-      <g
-         transform="matrix(0.60201967,0.4999142,-0.5122192,0.60410661,561.21213,379.62342)"
-         id="g4901">
-        <path
-           id="path4835"
-           d="m 19.728362,1031.4702 v 16.639"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#0017aa;stroke-width:3;stroke-linecap:round;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-        <path
-           id="path4839"
-           d="m 19.693302,1050.4826 -3.608306,-6.6105 h 7.146014 z"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#0017aa;stroke-width:0.63842267;stroke-linecap:round;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-      </g>
-      <g
-         transform="matrix(-0.60201967,-0.4999142,0.5122192,-0.60410661,-502.34634,1656.1693)"
-         id="g4901-4">
-        <path
-           id="path4835-5"
-           d="m 19.728362,1031.4702 v 16.639"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#0017aa;stroke-width:3;stroke-linecap:round;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-        <path
-           id="path4839-8"
-           d="m 19.693302,1050.4826 -3.608306,-6.6105 h 7.146014 z"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#0017aa;stroke-width:0.63842267;stroke-linecap:round;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-      </g>
-      <g
-         id="g3880">
-        <path
-           style="fill:none;stroke:#000000;stroke-width:2;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-           d="m 20.039629,1008.1212 5.495786,-0.071 0.07046,-5.3549 6.059456,-0.07"
-           id="path4929"
-           inkscape:connector-curvature="0" />
-      </g>
-      <g
-         id="g3877">
-        <path
-           style="fill:none;stroke:#000000;stroke-width:2;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-           d="m 51.887894,1008.4162 -5.495786,-0.071 -0.07046,-5.3549 -6.059456,-0.07"
-           id="path4929-1"
-           inkscape:connector-curvature="0" />
-      </g>
-      <text
-         sodipodi:linespacing="125%"
-         id="text5009"
-         y="1040.807"
-         x="17.34667"
-         style="font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#9b001b;fill-opacity:1;stroke:none;font-family:Comic Sans MS;-inkscape-font-specification:Comic Sans MS"
-         xml:space="preserve"><tspan
-           style="font-size:10px;font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;fill:#9b001b;fill-opacity:1;font-family:Arial;-inkscape-font-specification:Arial Bold"
-           y="1040.807"
-           x="17.34667"
-           id="tspan5011"
-           sodipodi:role="line">Zodd</tspan></text>
-      <path
-         sodipodi:nodetypes="cccccc"
-         inkscape:connector-curvature="0"
-         id="path3012-1"
-         d="m 63.769085,1047.86 c 39.848525,0.2975 39.764945,0.1829 39.764945,0.1829 l 0.36438,0.3401 15.08749,-24.5165 -36.332852,-0.3472 z"
-         style="fill:#828282;fill-opacity:1;stroke:#000000;stroke-width:1;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-      <g
-         transform="matrix(1,0,0,0.73291858,55.091424,278.15961)"
-         id="g5003-2">
-        <g
-           id="g4999-3"
-           transform="translate(0.35229396,-10.216525)">
-          <path
-             style="fill:#0017aa;fill-opacity:1;stroke:#9b001b;stroke-width:2.35320044;stroke-linecap:square;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none"
-             inkscape:connector-curvature="0"
-             d="m 19.619655,1051.261 -0.0379,-10.6898"
-             id="path4835-5-1-2" />
-          <path
-             style="fill:#9b001b;fill-opacity:1;stroke:#9b001b;stroke-width:0.50915164;stroke-linecap:square;stroke-linejoin:bevel;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none"
-             inkscape:connector-curvature="0"
-             d="m 19.650366,1036.3564 2.924609,5.3618 -5.646349,-0.079 z"
-             id="path4839-8-4-2" />
-        </g>
-        <path
-           id="path4835-5-1-9-1"
-           d="m 22.763027,1043.3097 -5.857755,0.068"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#9b001b;stroke-width:2.32358861;stroke-linecap:square;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-      </g>
-      <g
-         transform="translate(67.443707,-1.9936944)"
-         id="g3840-7">
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 0.44700789,1027.4531 15.09099111,-0.1708 0.03477,4.4259 -15.0487657,0 z"
-           id="path3805-4"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 15.232526,1012.5609 13.47153,0.1239 -13.172244,14.7178 -15.04876558,0 z"
-           id="path3805-3-09"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 15.488268,1027.5787 13.215609,-14.9388 0.0093,3.927 -13.147894,15.0997 z"
-           id="path3805-1-4"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-      </g>
-      <g
-         transform="translate(89.401793,-1.9687944)"
-         id="g3840-4-8">
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 0.44700789,1027.4531 15.09099111,-0.1708 0.03477,4.4259 -15.0487657,0 z"
-           id="path3805-6-8"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 14.38702,1012.7018 13.260154,0.053 -12.115362,14.6473 -15.04876558,0 z"
-           id="path3805-3-0-2"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-        <path
-           style="fill:#808000;fill-opacity:1;stroke:#000000;stroke-width:0.25849029;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:1;stroke-opacity:1;stroke-dasharray:none"
-           d="m 15.488268,1027.5787 12.088268,-14.9388 -0.272535,3.9975 -11.738718,15.0292 z"
-           id="path3805-1-3-4"
-           inkscape:connector-curvature="0"
-           sodipodi:nodetypes="ccccc" />
-      </g>
-      <g
-         transform="matrix(-0.60201967,-0.4999142,0.5122192,-0.60410661,-416.58059,1655.9424)"
-         id="g4901-5">
-        <path
-           id="path4835-51"
-           d="m 19.728362,1031.4702 v 16.639"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#0017aa;stroke-width:3;stroke-linecap:round;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-        <path
-           id="path4839-7"
-           d="m 19.693302,1050.4826 -3.608306,-6.6105 h 7.146014 z"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#0017aa;stroke-width:0.63842267;stroke-linecap:round;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-      </g>
-      <g
-         transform="matrix(-0.60201967,-0.4999142,0.5122192,-0.60410661,-438.38505,1655.989)"
-         id="g4901-4-1">
-        <path
-           id="path4835-5-15"
-           d="m 19.728362,1031.4702 v 16.639"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#0017aa;stroke-width:3;stroke-linecap:round;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-        <path
-           id="path4839-8-2"
-           d="m 19.693302,1050.4826 -3.608306,-6.6105 h 7.146014 z"
-           inkscape:connector-curvature="0"
-           style="fill:#0017aa;fill-opacity:1;stroke:#0017aa;stroke-width:0.63842267;stroke-linecap:round;stroke-miterlimit:0;stroke-opacity:1;stroke-dasharray:none" />
-      </g>
-      <text
-         sodipodi:linespacing="125%"
-         id="text5009-6"
-         y="1040.6267"
-         x="81.307961"
-         style="font-size:12px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#9b001b;fill-opacity:1;stroke:none;font-family:Comic Sans MS;-inkscape-font-specification:Comic Sans MS"
-         xml:space="preserve"><tspan
-           style="font-size:10px;font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;fill:#9b001b;fill-opacity:1;font-family:Arial;-inkscape-font-specification:Arial Bold"
-           y="1040.6267"
-           x="81.307961"
-           id="tspan5011-8"
-           sodipodi:role="line">Zeven</tspan></text>
-      <g
-         id="g3880-5"
-         transform="translate(64.334774,-0.35935805)">
-        <path
-           style="fill:none;stroke:#000000;stroke-width:2;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-           d="m 20.039629,1008.1212 5.495786,-0.071 0.07046,-5.3549 6.059456,-0.07"
-           id="path4929-7"
-           inkscape:connector-curvature="0" />
-      </g>
-      <g
-         id="g3880-6"
-         transform="translate(86.740669,0.20431232)">
-        <path
-           style="fill:none;stroke:#000000;stroke-width:2;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
-           d="m 20.039629,1008.1212 5.495786,-0.071 0.07046,-5.3549 6.059456,-0.07"
-           id="path4929-18"
-           inkscape:connector-curvature="0" />
-      </g>
-    </g>
-  </g>
-</svg>
diff --git a/pcb_calculator/bitmaps/sources/transline/rectwaveguide.png b/pcb_calculator/bitmaps/sources/transline/rectwaveguide.png
deleted file mode 100644
index d179d3cc1c..0000000000
Binary files a/pcb_calculator/bitmaps/sources/transline/rectwaveguide.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/transline/stripline.png b/pcb_calculator/bitmaps/sources/transline/stripline.png
deleted file mode 100644
index 54918ee54f..0000000000
Binary files a/pcb_calculator/bitmaps/sources/transline/stripline.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/transline/twistedpair.png b/pcb_calculator/bitmaps/sources/transline/twistedpair.png
deleted file mode 100644
index 75a5786f3a..0000000000
Binary files a/pcb_calculator/bitmaps/sources/transline/twistedpair.png and /dev/null differ
diff --git a/pcb_calculator/bitmaps/sources/via.svg b/pcb_calculator/bitmaps/sources/via.svg
deleted file mode 100644
index 4137239954..0000000000
--- a/pcb_calculator/bitmaps/sources/via.svg
+++ /dev/null
@@ -1,361 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="287.31168"
-   height="288.8616"
-   viewBox="0 0 76.017877 76.427968"
-   version="1.1"
-   id="svg8"
-   inkscape:version="0.92.1 r15371"
-   sodipodi:docname="via.svg"
-   inkscape:export-filename="D:\private-local\working\kicad\kicad\pcb_calculator\bitmaps\sources\via.png"
-   inkscape:export-xdpi="80.409149"
-   inkscape:export-ydpi="80.409149">
-  <defs
-     id="defs2">
-    <marker
-       inkscape:isstock="true"
-       style="overflow:visible"
-       id="marker9465"
-       refX="0"
-       refY="0"
-       orient="auto"
-       inkscape:stockid="Arrow2Lend">
-      <path
-         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
-         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
-         style="fill:#0402fc;fill-opacity:1;fill-rule:evenodd;stroke:#0402fc;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
-         id="path9463"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <marker
-       inkscape:isstock="true"
-       style="overflow:visible"
-       id="marker9401"
-       refX="0"
-       refY="0"
-       orient="auto"
-       inkscape:stockid="Arrow2Lstart">
-      <path
-         transform="matrix(1.1,0,0,1.1,1.1,0)"
-         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
-         style="fill:#0402fc;fill-opacity:1;fill-rule:evenodd;stroke:#0402fc;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
-         id="path9399"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow2Lend"
-       orient="auto"
-       refY="0"
-       refX="0"
-       id="Arrow2Lend"
-       style="overflow:visible"
-       inkscape:isstock="true"
-       inkscape:collect="always">
-      <path
-         id="path8476"
-         style="fill:#0402fc;fill-opacity:1;fill-rule:evenodd;stroke:#0402fc;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
-         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
-         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow1Lend"
-       orient="auto"
-       refY="0"
-       refX="0"
-       id="Arrow1Lend"
-       style="overflow:visible"
-       inkscape:isstock="true">
-      <path
-         id="path8458"
-         d="M 0,0 5,-5 -12.5,0 5,5 Z"
-         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
-         transform="matrix(-0.8,0,0,-0.8,-10,0)"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow2Lstart"
-       orient="auto"
-       refY="0"
-       refX="0"
-       id="marker8801"
-       style="overflow:visible"
-       inkscape:isstock="true"
-       inkscape:collect="always">
-      <path
-         id="path8799"
-         style="fill:#0402fc;fill-opacity:1;fill-rule:evenodd;stroke:#0402fc;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
-         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
-         transform="matrix(1.1,0,0,1.1,1.1,0)"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow1Mstart"
-       orient="auto"
-       refY="0"
-       refX="0"
-       id="Arrow1Mstart"
-       style="overflow:visible"
-       inkscape:isstock="true">
-      <path
-         id="path8461"
-         d="M 0,0 5,-5 -12.5,0 5,5 Z"
-         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
-         transform="matrix(0.4,0,0,0.4,4,0)"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow2Lstart"
-       orient="auto"
-       refY="0"
-       refX="0"
-       id="Arrow2Lstart"
-       style="overflow:visible"
-       inkscape:isstock="true">
-      <path
-         id="path8473"
-         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
-         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
-         transform="matrix(1.1,0,0,1.1,1.1,0)"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow1Lstart"
-       orient="auto"
-       refY="0"
-       refX="0"
-       id="marker8341"
-       style="overflow:visible"
-       inkscape:isstock="true">
-      <path
-         id="path8339"
-         d="M 0,0 5,-5 -12.5,0 5,5 Z"
-         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
-         transform="matrix(0.8,0,0,0.8,10,0)"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <marker
-       inkscape:isstock="true"
-       style="overflow:visible"
-       id="marker4531"
-       refX="0"
-       refY="0"
-       orient="auto"
-       inkscape:stockid="Arrow1Lstart">
-      <path
-         transform="matrix(0.8,0,0,0.8,10,0)"
-         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
-         d="M 0,0 5,-5 -12.5,0 5,5 Z"
-         id="path4529"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <marker
-       inkscape:isstock="true"
-       style="overflow:visible"
-       id="marker4495"
-       refX="0"
-       refY="0"
-       orient="auto"
-       inkscape:stockid="Arrow1Lstart">
-      <path
-         transform="matrix(0.8,0,0,0.8,10,0)"
-         style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1.00000003pt;stroke-opacity:1"
-         d="M 0,0 5,-5 -12.5,0 5,5 Z"
-         id="path4493"
-         inkscape:connector-curvature="0" />
-    </marker>
-    <symbol
-       id="RightAndDownArrow">
-      <title
-         id="title2315">Right and Down Arrow</title>
-      <path
-         inkscape:connector-curvature="0"
-         d="M 14.816667,14.816667 H 6.35 L 3.4395833,11.90625 h 6.35 L 3.7041667,5.8208333 5.8208333,3.7041667 11.90625,9.7895833 v -6.35 L 14.816667,6.35 Z"
-         style="stroke:none;stroke-width:0.26458332"
-         id="path2317" />
-    </symbol>
-    <marker
-       inkscape:isstock="true"
-       style="overflow:visible"
-       id="marker9465-7"
-       refX="0"
-       refY="0"
-       orient="auto"
-       inkscape:stockid="Arrow2Lend">
-      <path
-         inkscape:connector-curvature="0"
-         transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
-         d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
-         style="fill:#0402fc;fill-opacity:1;fill-rule:evenodd;stroke:#0402fc;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
-         id="path9463-6" />
-    </marker>
-  </defs>
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="1"
-     inkscape:pageshadow="2"
-     inkscape:zoom="1.072"
-     inkscape:cx="102.28598"
-     inkscape:cy="209.41831"
-     inkscape:document-units="mm"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     inkscape:window-width="1366"
-     inkscape:window-height="705"
-     inkscape:window-x="-8"
-     inkscape:window-y="-8"
-     inkscape:window-maximized="1"
-     inkscape:measure-start="-145.714,988.571"
-     inkscape:measure-end="148.571,591.429"
-     showguides="true"
-     inkscape:lockguides="false"
-     units="px"
-     objecttolerance="20"
-     inkscape:snap-global="true"
-     inkscape:snap-bbox="false"
-     inkscape:snap-others="true"
-     inkscape:snap-object-midpoints="true"
-     inkscape:snap-tangential="true"
-     inkscape:snap-perpendicular="true"
-     inkscape:object-paths="true"
-     inkscape:snap-intersection-paths="true"
-     inkscape:snap-smooth-nodes="true"
-     inkscape:object-nodes="true"
-     inkscape:snap-midpoints="true"
-     inkscape:pagecheckerboard="false"
-     fit-margin-top="0"
-     fit-margin-left="0"
-     fit-margin-right="0"
-     fit-margin-bottom="0">
-    <inkscape:grid
-       type="xygrid"
-       id="grid3684"
-       originx="-18.400886"
-       originy="-30.764148" />
-  </sodipodi:namedview>
-  <metadata
-     id="metadata5">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-        <cc:license
-           rdf:resource="http://creativecommons.org/licenses/by-sa/4.0/" />
-      </cc:Work>
-      <cc:License
-         rdf:about="http://creativecommons.org/licenses/by-sa/4.0/">
-        <cc:permits
-           rdf:resource="http://creativecommons.org/ns#Reproduction" />
-        <cc:permits
-           rdf:resource="http://creativecommons.org/ns#Distribution" />
-        <cc:requires
-           rdf:resource="http://creativecommons.org/ns#Notice" />
-        <cc:requires
-           rdf:resource="http://creativecommons.org/ns#Attribution" />
-        <cc:permits
-           rdf:resource="http://creativecommons.org/ns#DerivativeWorks" />
-        <cc:requires
-           rdf:resource="http://creativecommons.org/ns#ShareAlike" />
-      </cc:License>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Layer 1"
-     inkscape:groupmode="layer"
-     id="layer1"
-     transform="translate(-18.400887,-189.80787)">
-    <circle
-       id="path3680"
-       style="fill:#ffffff;stroke:#000000;stroke-width:0.5291667;stroke-miterlimit:4;stroke-dasharray:none"
-       transform="rotate(151.126)"
-       cy="-232.45309"
-       cx="56.370422"
-       r="31.26413" />
-    <circle
-       id="path3680-3"
-       style="fill:#fcb23c;fill-opacity:1;stroke:none;stroke-width:0.35277778;stroke-miterlimit:4;stroke-dasharray:none"
-       transform="rotate(151.126)"
-       cy="-232.45309"
-       cx="56.370422"
-       r="27.438532" />
-    <circle
-       id="path3680-3-8"
-       style="fill:#cccecc;fill-opacity:1;stroke:none;stroke-width:0.35277778;stroke-miterlimit:4;stroke-dasharray:none"
-       transform="rotate(151.126)"
-       cy="-232.45309"
-       cx="56.370419"
-       r="19.417116" />
-    <path
-       style="fill:none;stroke:#0402fc;stroke-width:0.35277778;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:1.41111115, 1.41111115;stroke-dashoffset:0;stroke-opacity:1"
-       d="m 43.468435,230.84224 v -36.2682"
-       id="path11320"
-       inkscape:connector-curvature="0" />
-    <path
-       inkscape:connector-curvature="0"
-       id="use4645"
-       d="m 82.302065,230.91777 v -36.2682"
-       style="fill:none;stroke:#0402fc;stroke-width:0.35277778;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:1.41111115, 1.41111115;stroke-dashoffset:0;stroke-opacity:1" />
-    <path
-       style="fill:none;stroke:#0402fc;stroke-width:0.35277778;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-start:url(#marker8801);marker-end:url(#Arrow2Lend)"
-       d="m 43.468435,197.25123 h 38.83363"
-       id="path8441"
-       inkscape:connector-curvature="0" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:8.46666622px;line-height:1.25;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#0402fc;fill-opacity:1;stroke:none;stroke-width:0.35277778;stroke-miterlimit:4;stroke-dasharray:none"
-       x="59.458069"
-       y="195.96356"
-       id="text8995"><tspan
-         sodipodi:role="line"
-         id="tspan8993"
-         x="59.458069"
-         y="195.96356"
-         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:8.46666622px;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start;writing-mode:lr-tb;text-anchor:start;fill:#0402fc;fill-opacity:1;stroke-width:0.35277778;stroke-miterlimit:4;stroke-dasharray:none">D</tspan></text>
-    <path
-       inkscape:connector-curvature="0"
-       id="path9381"
-       d="M 63.084305,250.19193 H 23.910954"
-       style="fill:none;stroke:#0402fc;stroke-width:0.35277778;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:1.41111115, 1.41111115;stroke-dashoffset:0;stroke-opacity:1" />
-    <path
-       style="fill:none;stroke:#0402fc;stroke-width:0.35277778;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:1.41111115, 1.41111115;stroke-dashoffset:0;stroke-opacity:1"
-       d="M 63.044661,258.21388 H 23.87131"
-       id="path9383"
-       inkscape:connector-curvature="0" />
-    <path
-       inkscape:connector-curvature="0"
-       id="path9397"
-       d="m 26.967687,237.97416 v 11.93043"
-       style="fill:none;stroke:#0402fc;stroke-width:0.35277778;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-end:url(#marker9465)" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:8.46666622px;line-height:0.30000001;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#0402fc;fill-opacity:1;stroke:none;stroke-width:0.35277778;stroke-miterlimit:4;stroke-dasharray:none"
-       x="18.400887"
-       y="246.25377"
-       id="text8995-0"><tspan
-         sodipodi:role="line"
-         x="18.400887"
-         y="246.25377"
-         style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:8.46666622px;line-height:0.30000001;font-family:sans-serif;-inkscape-font-specification:'sans-serif, Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-feature-settings:normal;text-align:start;writing-mode:lr-tb;text-anchor:start;fill:#0402fc;fill-opacity:1;stroke-width:0.35277778;stroke-miterlimit:4;stroke-dasharray:none"
-         id="tspan10739">T</tspan></text>
-    <path
-       inkscape:connector-curvature="0"
-       id="path9397-6"
-       d="m 26.980116,266.23583 v -8.02195"
-       style="fill:none;stroke:#0402fc;stroke-width:0.35277778;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-end:url(#marker9465-7)" />
-  </g>
-</svg>