From 34351baa98ffbdaa85b77c444f740e0abad511ef Mon Sep 17 00:00:00 2001
From: Denis Chevalier <perso@denischevalier.fr>
Date: Sat, 8 Aug 2026 15:07:16 +0200
Subject: Improve global project (typos, enforce 80 columns whenever possible,
 diagrams) and finish 3.1

---
 pictures/front-panel-geometry.svg | 648 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 648 insertions(+)
 create mode 100644 pictures/front-panel-geometry.svg

(limited to 'pictures/front-panel-geometry.svg')

diff --git a/pictures/front-panel-geometry.svg b/pictures/front-panel-geometry.svg
new file mode 100644
index 0000000..39aa860
--- /dev/null
+++ b/pictures/front-panel-geometry.svg
@@ -0,0 +1,648 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   viewBox="0 0 582.5354 709.44208"
+   width="582.5354"
+   height="709.44208"
+   style="font-family:serif"
+   version="1.1"
+   id="svg53"
+   sodipodi:docname="front-panel-geometry.svg"
+   inkscape:version="1.4.4 (dcaf3e7d9e, 2026-05-05)"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:cc="http://creativecommons.org/ns#">
+  <sodipodi:namedview
+     id="namedview53"
+     pagecolor="#ffffff"
+     bordercolor="#000000"
+     borderopacity="0.25"
+     inkscape:showpageshadow="false"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     showborder="false"
+     borderlayer="false"
+     inkscape:zoom="1.2698413"
+     inkscape:cx="346.89375"
+     inkscape:cy="519.75"
+     inkscape:window-width="1920"
+     inkscape:window-height="1011"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg53" />
+  <defs
+     id="defs3">
+    <marker
+       style="overflow:visible"
+       id="Triangle"
+       refX="0"
+       refY="0"
+       orient="auto-start-reverse"
+       inkscape:stockid="Triangle arrow"
+       markerWidth="1"
+       markerHeight="1"
+       viewBox="0 0 1 1"
+       inkscape:isstock="true"
+       inkscape:collect="always"
+       preserveAspectRatio="xMidYMid">
+      <path
+         transform="scale(0.5)"
+         style="fill:context-stroke;fill-rule:evenodd;stroke:context-stroke;stroke-width:1pt"
+         d="M 5.77,0 -2.88,5 V -5 Z"
+         id="path135" />
+    </marker>
+    <pattern
+       inkscape:collect="always"
+       xlink:href="#maskHatch"
+       id="pattern53"
+       patternTransform="rotate(45,-608.74415,-371.59198)" />
+    <!-- Standard CAD Arrowheads -->
+    <!-- Diagonal Hatch Pattern for Inner Unpainted/Masked Contact Areas -->
+    <pattern
+       id="maskHatch"
+       width="6"
+       height="6"
+       patternTransform="rotate(45 0 0)"
+       patternUnits="userSpaceOnUse">
+      <line
+         x1="0"
+         y1="0"
+         x2="0"
+         y2="6"
+         stroke="#000000"
+         stroke-width="0.8"
+         stroke-dasharray="2,2"
+         id="line2" />
+    </pattern>
+    <!-- Countersunk Hole Symbol (Front Facing) -->
+  </defs>
+  <!-- ================================================================= -->
+  <!-- TITLE & HEADER                                                    -->
+  <!-- ================================================================= -->
+  <!-- ================================================================= -->
+  <!-- VIEW 1: ISOMETRIC VIEW (LEFT SIDE)                                -->
+  <!-- ================================================================= -->
+  <text
+     x="212.94775"
+     y="9.6103516"
+     text-anchor="middle"
+     fill="#000000"
+     font-size="13px"
+     font-weight="700"
+     id="text5">ISOMETRIC VIEW</text>
+  <text
+     x="212.94775"
+     y="25.610352"
+     text-anchor="middle"
+     fill="#666666"
+     font-size="10px"
+     id="text6"
+     style="fill:#000000;fill-opacity:1">(Showing Front/Rear Faces, Lips &amp; Masking)</text>
+  <polygon
+     points="150,120 190,110 190,395 150,405 "
+     fill="#f8fafc"
+     stroke="#000000"
+     stroke-width="2"
+     id="polygon6"
+     transform="translate(12.947754,-72.389648)"
+     style="fill:#ffffff;fill-opacity:1" />
+  <polygon
+     points="190,110 198,108 198,393 190,395 "
+     fill="#e2e8f0"
+     stroke="#000000"
+     stroke-width="1.5"
+     id="polygon7"
+     transform="translate(12.947754,-72.389648)" />
+  <line
+     x1="162.94775"
+     y1="57.610352"
+     x2="202.94775"
+     y2="47.610352"
+     stroke="#000000"
+     stroke-width="1"
+     stroke-dasharray="3, 3"
+     id="line7" />
+  <line
+     x1="162.94775"
+     y1="322.61035"
+     x2="202.94775"
+     y2="312.61035"
+     stroke="#000000"
+     stroke-width="1"
+     stroke-dasharray="3, 3"
+     id="line8" />
+  <polygon
+     points="198,108 198,393 204,391 204,106 "
+     fill="url(#maskHatch)"
+     stroke="#000000"
+     stroke-width="0.8"
+     id="polygon8"
+     transform="translate(12.947754,-72.389648)" />
+  <line
+     x1="182.94775"
+     y1="52.610352"
+     x2="112.94775"
+     y2="27.610352"
+     stroke="#000000"
+     stroke-width="1"
+     id="line9"
+     style="stroke-width:0;stroke-dasharray:none" />
+  <text
+     x="107.94775"
+     y="23.610352"
+     text-anchor="end"
+     fill="#000000"
+     font-size="10px"
+     font-weight="700"
+     id="text9">Top Lip Extension</text>
+  <text
+     x="107.94775"
+     y="35.610352"
+     text-anchor="end"
+     fill="#555555"
+     font-size="9px"
+     id="text10"
+     style="fill:#000000;fill-opacity:1">6.35 mm (0.25&quot;)</text>
+  <line
+     x1="182.94775"
+     y1="187.61035"
+     x2="92.947754"
+     y2="187.61035"
+     stroke="#000000"
+     stroke-width="1"
+     id="line12"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <text
+     x="87.947754"
+     y="185.61035"
+     text-anchor="end"
+     fill="#000000"
+     font-size="10px"
+     font-weight="700"
+     id="text13">Body Section</text>
+  <text
+     x="87.947754"
+     y="197.61035"
+     text-anchor="end"
+     fill="#555555"
+     font-size="9px"
+     id="text14"
+     style="fill:#000000;fill-opacity:1">Height: 165.1 mm (6.5&quot;)</text>
+  <line
+     x1="213.94775"
+     y1="177.61035"
+     x2="272.94775"
+     y2="177.61035"
+     stroke="#000000"
+     stroke-width="1"
+     id="line14"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <text
+     x="277.94775"
+     y="175.61035"
+     fill="#000000"
+     font-size="10px"
+     font-weight="700"
+     id="text15">Inner Face Contact Area</text>
+  <text
+     x="277.94775"
+     y="187.61035"
+     fill="#555555"
+     font-size="9px"
+     id="text16"
+     style="fill:#000000;fill-opacity:1">Masked (Unpainted) for grounding</text>
+  <!-- ================================================================= -->
+  <!-- VIEW 2: FRONT ELEVATION (OUTSIDE FACE)                            -->
+  <!-- ================================================================= -->
+  <text
+     x="466.94775"
+     y="9.6103516"
+     text-anchor="middle"
+     fill="#000000"
+     font-size="13px"
+     font-weight="700"
+     id="text17">FRONT ELEVATION</text>
+  <text
+     x="466.94775"
+     y="25.610352"
+     text-anchor="middle"
+     fill="#666666"
+     font-size="10px"
+     id="text18"
+     style="fill:#000000;fill-opacity:1">(Outside Face: 177.8 mm × 38.0 mm)</text>
+  <rect
+     x="438.44775"
+     y="47.610352"
+     width="57"
+     height="266.70001"
+     fill="#f8fafc"
+     stroke="#000000"
+     stroke-width="2"
+     id="rect18"
+     style="fill:#ffffff;fill-opacity:1" />
+  <line
+     x1="438.44775"
+     y1="57.135345"
+     x2="495.44775"
+     y2="57.135345"
+     stroke="#000000"
+     stroke-width="1"
+     stroke-dasharray="3, 3"
+     id="line18" />
+  <line
+     x1="438.44775"
+     y1="304.78534"
+     x2="495.44775"
+     y2="304.78534"
+     stroke="#000000"
+     stroke-width="1"
+     stroke-dasharray="3, 3"
+     id="line19" />
+  <line
+     x1="466.94775"
+     y1="32.610352"
+     x2="466.94775"
+     y2="327.61035"
+     stroke="#000000"
+     stroke-width="0.8"
+     stroke-dasharray="8, 3, 2, 3"
+     id="line20" />
+  <line
+     x1="438.44775"
+     y1="314.31036"
+     x2="438.44775"
+     y2="347.61035"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line21"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="495.44775"
+     y1="314.31036"
+     x2="495.44775"
+     y2="347.61035"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line22"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="442.65396"
+     y1="347.61035"
+     x2="492.81656"
+     y2="347.61035"
+     stroke="#000000"
+     stroke-width="1.12573"
+     marker-start="url(#arrow-start)"
+     marker-end="url(#arrow-end)"
+     id="line23"
+     style="marker-start:url(#Triangle);marker-end:url(#Triangle)" />
+  <text
+     x="466.94775"
+     y="362.61035"
+     text-anchor="middle"
+     fill="#000000"
+     font-size="10.5px"
+     font-weight="700"
+     id="text23">Width: 38.0 mm</text>
+  <text
+     x="466.94775"
+     y="374.61035"
+     text-anchor="middle"
+     fill="#555555"
+     font-size="8.5px"
+     id="text24"
+     style="fill:#000000;fill-opacity:1">+0.0 / -0.1 mm</text>
+  <line
+     x1="495.44775"
+     y1="57.135345"
+     x2="526.94775"
+     y2="57.135345"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line24"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="495.44775"
+     y1="304.78534"
+     x2="526.94775"
+     y2="304.78534"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line25"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="526.94775"
+     y1="60.928162"
+     x2="526.94775"
+     y2="300.20505"
+     stroke="#000000"
+     stroke-width="1.17954"
+     marker-start="url(#arrow-start)"
+     marker-end="url(#arrow-end)"
+     id="line26"
+     style="marker-start:url(#Triangle);marker-end:url(#Triangle)" />
+  <g
+     transform="rotate(90,178.9937,359.95405)"
+     id="g26">
+    <text
+       x="0"
+       y="0"
+       text-anchor="middle"
+       fill="#000000"
+       font-size="10px"
+       font-weight="700"
+       id="text26">Body: 165.1 mm ±0.1</text>
+  </g>
+  <line
+     x1="495.44775"
+     y1="47.610352"
+     x2="561.94775"
+     y2="47.610352"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line27"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="495.44775"
+     y1="314.31036"
+     x2="561.94775"
+     y2="314.31036"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line28"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="561.94775"
+     y1="52.200714"
+     x2="561.94775"
+     y2="310.50751"
+     stroke="#000000"
+     stroke-width="1.18096"
+     marker-start="url(#arrow-start)"
+     marker-end="url(#arrow-end)"
+     id="line29"
+     style="marker-start:url(#Triangle);marker-end:url(#Triangle)" />
+  <g
+     transform="rotate(90,196.4937,377.45405)"
+     id="g29">
+    <text
+       x="0"
+       y="0"
+       text-anchor="middle"
+       fill="#000000"
+       font-size="10.5px"
+       font-weight="700"
+       id="text29">Panel Height: 177.8 mm ±0.1 (4U)</text>
+  </g>
+  <!-- ================================================================= -->
+  <!-- VIEW 3: REAR ELEVATION (INSIDE FACE & MASKING)                    -->
+  <!-- ================================================================= -->
+  <text
+     x="188.94775"
+     y="403.61035"
+     text-anchor="middle"
+     fill="#000000"
+     font-size="13px"
+     font-weight="700"
+     id="text30">REAR ELEVATION</text>
+  <text
+     x="188.94775"
+     y="419.61035"
+     text-anchor="middle"
+     fill="#666666"
+     font-size="10px"
+     id="text31"
+     style="fill:#000000;fill-opacity:1">(Inside Face: Masked Contact Area)</text>
+  <rect
+     x="160.44775"
+     y="441.61035"
+     width="57"
+     height="266.70001"
+     fill="#f8fafc"
+     stroke="#000000"
+     stroke-width="2"
+     id="rect31" />
+  <rect
+     x="160.44775"
+     y="441.61035"
+     width="57"
+     height="266.70001"
+     fill="url(#maskHatch)"
+     id="rect32"
+     style="fill:url(#pattern53)" />
+  <rect
+     x="168.44775"
+     y="453.61035"
+     width="41"
+     height="242.7"
+     fill="#ffffff"
+     stroke="#000000"
+     stroke-width="1"
+     stroke-dasharray="2, 2"
+     id="rect33" />
+  <line
+     x1="173.94775"
+     y1="521.61035"
+     x2="243.94775"
+     y2="501.61035"
+     stroke="#000000"
+     stroke-width="0.8"
+     id="line34"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <text
+     x="248.94775"
+     y="499.61035"
+     fill="#000000"
+     font-size="9.5px"
+     font-weight="600"
+     id="text34">Masked Contact Zone</text>
+  <text
+     x="248.94775"
+     y="510.61035"
+     fill="#555555"
+     font-size="8.5px"
+     id="text35"
+     style="fill:#000000;fill-opacity:1">Unpainted for L-channel contact</text>
+  <line
+     x1="188.94775"
+     y1="571.61035"
+     x2="243.94775"
+     y2="571.61035"
+     stroke="#000000"
+     stroke-width="0.8"
+     id="line35"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <text
+     x="248.94775"
+     y="569.61035"
+     fill="#000000"
+     font-size="9.5px"
+     font-weight="600"
+     id="text36">Powder-Coated Interior</text>
+  <text
+     x="248.94775"
+     y="580.61035"
+     fill="#555555"
+     font-size="8.5px"
+     id="text37"
+     style="fill:#000000;fill-opacity:1">Matte Black (RAL 9005)</text>
+  <!-- ================================================================= -->
+  <!-- VIEW 4: SIDE ELEVATION PROFILE (RIGHT SIDE)                       -->
+  <!-- ================================================================= -->
+  <text
+     x="466.94775"
+     y="403.61035"
+     text-anchor="middle"
+     fill="#000000"
+     font-size="13px"
+     font-weight="700"
+     id="text38">SIDE PROFILE</text>
+  <text
+     x="466.94775"
+     y="419.61035"
+     text-anchor="middle"
+     fill="#666666"
+     font-size="10px"
+     id="text39"
+     style="fill:#000000;fill-opacity:1">(Thickness &amp; Lip Extensions)</text>
+  <rect
+     x="463.94775"
+     y="441.61035"
+     width="6"
+     height="266.70001"
+     fill="#cbd5e1"
+     stroke="#000000"
+     stroke-width="1.5"
+     id="rect39"
+     style="fill:#ffffff;fill-opacity:1" />
+  <line
+     x1="469.94775"
+     y1="441.61035"
+     x2="511.94775"
+     y2="441.61035"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line41"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="469.94775"
+     y1="451.13538"
+     x2="511.94775"
+     y2="451.13538"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line42"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="512.94775"
+     y1="443.80035"
+     x2="512.94775"
+     y2="448.94537"
+     stroke="#000000"
+     stroke-width="0.734957"
+     marker-start="url(#arrow-start)"
+     marker-end="url(#arrow-end)"
+     id="line43"
+     style="marker-start:url(#Triangle);marker-end:url(#Triangle)" />
+  <text
+     x="524.94775"
+     y="449.61035"
+     fill="#000000"
+     font-size="9px"
+     font-weight="600"
+     id="text43">6.35 mm Lip</text>
+  <line
+     x1="469.94775"
+     y1="698.78534"
+     x2="511.94775"
+     y2="698.78534"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line44"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="469.94775"
+     y1="708.31036"
+     x2="511.94775"
+     y2="708.31036"
+     stroke="#000000"
+     stroke-width="0.75"
+     id="line45"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <line
+     x1="512.94775"
+     y1="701.15662"
+     x2="512.94775"
+     y2="706.72656"
+     stroke="#000000"
+     stroke-width="0.7647"
+     marker-start="url(#arrow-start)"
+     marker-end="url(#arrow-end)"
+     id="line46"
+     style="marker-start:url(#Triangle);marker-end:url(#Triangle)" />
+  <text
+     x="524.94775"
+     y="706.61035"
+     fill="#000000"
+     font-size="9px"
+     font-weight="600"
+     id="text46">6.35 mm Lip</text>
+  <line
+     x1="463.94775"
+     y1="571.61035"
+     x2="416.94775"
+     y2="571.61035"
+     stroke="#000000"
+     stroke-width="0.8"
+     id="line47"
+     style="stroke-width:0.717;stroke-dasharray:none" />
+  <text
+     x="411.94775"
+     y="569.61035"
+     text-anchor="end"
+     fill="#000000"
+     font-size="9.5px"
+     font-weight="600"
+     id="text47">1.2 mm</text>
+  <text
+     x="411.94775"
+     y="580.61035"
+     text-anchor="end"
+     fill="#555555"
+     font-size="8.5px"
+     id="text48"
+     style="fill:#000000;fill-opacity:1">Steel Plate</text>
+  <!-- ================================================================= -->
+  <!-- TECHNICAL NOTES SUMMARY BOX                                       -->
+  <!-- ================================================================= -->
+  <metadata
+     id="metadata53">
+    <rdf:RDF>
+      <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>
+      <cc:Work
+         rdf:about="">
+        <cc:license
+           rdf:resource="http://creativecommons.org/licenses/by-sa/4.0/" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+</svg>
-- 
cgit