| 摘要 |
PROBLEM TO BE SOLVED: To provide a finishing tool which can confirm easily and surely whether finishing work for satisfying a required condition is achieved or not, in a preformed drill hole. SOLUTION: A tool for applying finishing work to a drill hole 5 preformed in a base material U is provided with a shaft part 2 capable of introduction to the drill hole 5 and a mounted end part 1 connected coaxially to the rear end part of the shaft part 2 positioned on an opposite side to the working direction. A marker element 15 integrally turnable therewith is arranged on the shaft part 2 toward the working direction at a position separated in the redius direction. At the operation time of the tool, by applying a marking on the base material surface O by the marker element 15, a sign for indicating the finsh completion of the drill hole 5 is made. |
