| 摘要 |
PROBLEM TO BE SOLVED: To provide a marking tool for a bolt and a nut, which enables marking to be applied to the bolt and the nut, etc. through one-touch operation after primary fastening, and which enables accurate marking to be performed without marking unevenness.SOLUTION: One roller 2 for marking is pivotally supported on a marking holder 1 set freely movable toward a base end direction from a tip of a fastened bolt-nut-and-washer to be marked, in such a manner as to be freely rotatable on a lower end of a roller arm 21 having an upper end rotatably and pivotally supported on the marking holder 1.SELECTED DRAWING: Figure 1 |
