NEEDLE-SHAPED CONTACT PROBE

摘要

PROBLEM TO BE SOLVED: To provide a needle-shaped contact probe capable of performing stable measurement over a long period in measuring the internal resistance of a flat plate contact on the order of mΩ. SOLUTION: In a needle-shaped contact probe which comprises at least two needle-shaped protrusions 1 and 2 at a tip of a rod member 3, the distances (heights (La and Lb)) from any horizontal plane 4 which intersects the rod member 3 with the axis 3a of the rod member 3 as a vertical line to the tips 1a and 2a are different for every protrusions. It is preferable to arrange the needle-shaped protrusions helically at the tip of the rod member 3.