| 摘要 |
PROBLEM TO BE SOLVED: To provide an assisting tool capable of facilitating hole making work by suppressing bouncing and jumping of a drill to the minimum when drilling a tile surface, steel plate, hard panel, or the like by the drill. SOLUTION: In the assisting tool, urethane elastomer is employed for closely fixing a fixed plate and a drill guide part is closely mounted thereon for stabilizing the drill rotation so that the tool helps to drill a hole easily. COPYRIGHT: (C)2011,JPO&INPIT
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