| 摘要 |
PROBLEM TO BE SOLVED: To provide a jig to precisely punch on a parent metal to drill on it without marking-off and to use at the time of drawing a marking-off line on the parent metal inner size of which is 15 to 50, 20 to 50, 25 to 50, etc. SOLUTION: A punch gauge constitutes its characteristic feature of providing a large number of holes on a plate bent in inner size of 15 to 50, 20 to 50, 25 to 50 at a right angle and in the inner size of 15 to 75, 15 to 100, etc., in accordance with their use. Additionally, a magnet etc., is installed in accordance with their use.
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