| 摘要 |
PURPOSE:To enable deviation to be detected without damaging a completed product, by forming a plurality of central through hole parts for detecting deviation in external-layer and inner-layer plates, and a plurality of peripheral through hole parts around control ones the, deviation detection conductors, etc., with diameters different from each other. CONSTITUTION:A plurality of central through hole parts 5 and a plurality of peripheral through hole parts 6 are provided in a first external-layer plate 1. An inner-layer central through hole part 7, inner-layer peripheral through hole part 8, and a T-shape deviation detecting conductor 9 which are connected to them are provided to a first inner-layer plate 2. An inner-layer center through hole part 7a and inner-layer peripheral through hole part 8a are provided in a second inner-layer plate 2a. A central through hole part 5a and peripheral through hole part 6a are provided in a second external-layer plate 1a. If the inner-layer central through hole part 7 deviates from the central through hole parts 5, the inner wall conductor of the central through hole parts 5 deviates and is brought into contact with one of detection conductors 9, thus resulting into a continuity state. Thus, it can be detected by a conduction inspection jig, etc. |
