| 摘要 |
Apparatus and methods for measuring the electrical resistance of conducti ve materials are disclosed. In one embodiment, an apparatus includes a housing, and first, second, third, and fourth conductive members projecting outwardly fro m the housing. The conductive members are engageable with an electrically-conducti ve material at a plurality of points distributed along a measurement axis. In a n alternate embodiment, at least some of the conductive members include a spring-loaded portion such that a contact portion of the conductive member projects outwardly from the housing by a variable distance, In operation, the electrical resistance of t he electrically-conductive material is determinable from a known current applie d between the first and fourth conductive members, and a voltage measured between the second and third conductive members. |
