2 layers116.5 × 152.5 mm

InstrumentV3
orpheus016/four-point-probe
Four point probe for semiconductor instrumentation system
71 partsMIT
Boards in 1 GitHub repository, designed in KiCad, that use the TL431ACLP by Texas Instruments (0℃~+70℃ 100mA 1mA 2.495V~36V 2.495V~36V 22.9ppm/℃ Adjustable Parallel ±1% TO-92-3 Voltage Reference ROHS). See how each wires it, with its parts, size, README and files; the TL431ACLP’s symbol, footprint and pinout are on its own page.

orpheus016/four-point-probe
Four point probe for semiconductor instrumentation system