PURPOSE: To efficiently inspect the wiring of a printed wiring board with high accuracy by providing movable elastic probes through which wire pins having restoring properties are slidably passed in the vertical direction at the positions of energizing sections to be inspected on a pair of an upper and lower supporting plates facing each other at an interval.

CONSTITUTION: After a grid converting jig plate 20 is positioned on a lower universal head 12 by putting hole sections 23 provided at both end sections of the plate 20 on positioning projections 15 provided on both end sections of the head 12, positioning pins 80 are inserted into hole sections 24 on the upper surface of the plate 20. Then the head 12 is raised to a prescribed position by moving an elevating means 11 upward. Thereafter, the propriety of a wiring board 1 is discriminated by conducting the part to be inspected of the board 1 which is in contact with the terminal sections of wires 41 and 51 by making a testing current to flow between and applying a testing voltage across an upper universal head 16 and the lower head 12 while the plate 20, a jig plate 30 for inspection, mobile wire rope 40, printed wiring board 1, mobile wire rope 50, jig plate 23 for inspection, and grid converting jig plate 25 put between an upper universal head 16 and the lower head 12 are compressed with a prescribed pressure.