| 摘要 |
PROBLEM TO BE SOLVED: To provide a marking tool easily forming a mark on a bolt joining surface. SOLUTION: In the marking tool including a cylinder (10) covering the bolt joining surface, a mark forming part (20) forming the mark on the bolt joining surface covered by the cylinder (10), and a moving part (40) vertically moving the mark forming part (20) inside the cylinder (10), the mark forming part (20) is moved by the moving part (40), and the mark is formed on the bolt joining surface when the tip of the mark forming part (20) contacts the bolt joining surface. COPYRIGHT: (C)2011,JPO&INPIT
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