| 摘要 |
PROBLEM TO BE SOLVED: To provide a gauge for measuring and adjusting a pachinko nail angle. SOLUTION: A protractor scale 3 is displayed on a circumferential face 2 of a protractor board 1 as a plate body formed in a fan shape. An abutting face 4 which can be made abut on a board face 6 of a Pachinko machine in a direction orthogonally crossing a line extended from the center scale of 90°in a symmetrical position against the circumferential face 2 is formed on the protractor board 1. The distance between the circumferential face 2 and the abutting face 4 is formed shorter than the length of a nail 7. An origin 5 for measuring the nail angle is displayed on the line extended from the center scale 90°facing the abutting face 4. COPYRIGHT: (C)2005,JPO&NCIPI
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