Patent ID: 7212016

Claim:
An apparatus for measuring an electrical resistance of an electrically-conductive material, the apparatus comprising: a housing having a base portion, a cap portion and a centrally disposed body portion, the base portion and the cap portion being fixedly coupled to the body portion in an abutting relationship; first, second, third, and fourth conductive members projecting outwardly from the housing, the conductive members being engageable with the electrically-conductive material at a plurality of points distributed along a measurement axis, at least some of the conductive members having a compliant electrically-conductive metal-containing polymer tip portion configured to directly engage the electrically-conductive material and to at least partially promote a uniform contact area between the conductive member and the electrically-conductive material; and a calibration device that includes a substrate having a plurality of contact pads formed thereon and adapted to be engaged with the conductive members, a calibration article having a known resistance, and a plurality of conductive leads electrically coupling the contact pads with the calibration article.