Patent ID: 7362087

Claim:
An adaptor for inspection of circuit boards, comprising: a wiring board for connection, on a front surface of which a plurality of connecting electrodes are formed in accordance with a pattern corresponding to a pattern of electrodes to be inspected of a circuit board, which is an object of inspection; and an anisotropically conductive elastomer sheet detachably arranged on the front surface of the wiring board for connection, wherein the anisotropically conductive elastomer sheet has a surface roughness of 0.5 to 5 μm on its front surface coming into contact with the circuit board, and a surface roughness of at most 0.3 μm on its back surface coming into contact with the wiring board for connection, and wherein the wiring board for connection includes, on its front surface, an insulating layer formed such that each of the connecting electrodes is exposed, and the insulating layer has a surface roughness of at most 0.2 μm on its front surface.