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40-pin zero insertion force socket, through-hole, row spacing 9.53 mm (375 mils), Clearance8mm 22-lead surface-mounted (SMD) DIP package, row spacing 15.24 mm (600 mils), http://multimedia.3m.com/mws/media/494546O/3mtm-dip-sockets-100-2-54-mm-ts0365.pdf 3M 18-pin zero insertion force socket, through-hole, row spacing 10.16 mm (400 mils 12-lead surface-mounted (SMD) DIP package, row spacing 8.89 mm (350 mils), SMDSocket, LongPads 5-lead though-hole mounted DIP package, row spacing 10.16 mm (400 mils 22-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), body size 6.7x9.18mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/204.pdf), SMD Sub-miniature slide switch, JS series, DPDT, http://spec_sheets.e-switch.com/specs/P040047.pdf E-Switch slide switch, right-angle, http://www.ckswitches.com/media/1422/js.pdf switch spdt 0 3 vertex -8.81921 -1.75094 3 vertex 4.99803 7.47422 3 vertex -6.35807 6.35807 3 vertex -3.44384 8.30568 3 vertex -7.4763 4.9955 3 vertex 8.82707 1.75581 3.82299 facet normal -4.931766e-001 -8.630599e-001 1.091071e-001 facet normal 0.00743567 0.0992448 -0.995035 facet normal 1.245683e-13 -1.000000e+00 -2.027603e-13 vertex -1.045961e+02 9.725134e+01 1.214390e+01 vertex -1.047306e+02 9.725134e+01 1.230347e+01 facet normal 0.886065 -0.124621 0.446496 facet normal -0.241719 -0.796857 0.553706 facet normal 5.038512e-001 -8.637905e-001 0.000000e+000 vertex 5.021640e+000 -2.681558e+000 2.496000e+001 vertex -7.007181e+000 7.714146e-001 1.747200e+001 facet normal -0.995197 -0.0978932 -0 facet normal 7.071006e-001 3.148585e-003 7.071059e-001 vertex -5.078753e+000 9.622872e-001 2.484855e+001 facet normal -0.262695 0.257305 0.929939 facet normal 0.638759 0.741873 0.203989 facet normal -3.533242e-16 -1.018103e-15 -1.000000e+00 facet normal 0.288902 -0.952375 0.0975576 vertex -8.33262 -3.38578 4.51215 facet normal -2.880153e-004 -5.040268e-004 -9.999998e-001 ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: front, back How to.

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