Electrical probe (magnetic)

SummaryThis design is a magnetic probe holder to take contact with a PCB pad in a simple but reliable way. I design it because i needed to connect 8 pads on a single samples and i didn't have enough probes.It uses a single M3 screw to control the rotation of the arm and its contact with the pad. The whole probe has to be positioned manually. My design uses 2 circular 12mm diameter magnets (thicknesses from 2 to 3 mm are ok) to attach to an iron base. Alternatively you can use a thin piece of rig