JANDEL ENGINEERING LTD. manufactures the 4-pin probe to be compatible with Napson Corporation equipment.. It has a 1″ diameter body and is 1.6″ high (25.4mm x 40.5mm high). The probe weighs 50g.
Four-Point-Probes offers 4 point probe equipment for measuring the sheet resistance and bulk (volume) resistivity of materials used in the semiconductor industry, universities, and in materials science including thin films, wafers, ingots, and other materials and conductive coatings.