| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that, since adjustment of an external diameter micrometer is performed by matching a scale by a technique of an artisan, when the skill of the artisan is low, and when a reference rod is long, a contact portion is deviated and inclination occurs, and therefore adjustment becomes difficult.SOLUTION: Different diameter rings are created, and they are fitted to two contact portions of an external diameter micrometer and reference dimension rod. Therefore, movement in a straight angle direction is limited for measurement and adjustment. |
