| 摘要 |
The invention is related to the calipers (100) comprising a fixed jaw (110) and a sliding jaw (120) configured on the guide rail (160) and an indicator (170) showing the diameter gauge of the cylindrical screwed part (150) to be measured which is between said fixed and sliding jaws, and characterized in comprising a nozzle (130) configured on said fixed jaw (110) and sliding jaw (120) and which comprises a surface with radius (131) measuring the major diameter (d) of a cylindrical screwed part (150) to be measured. |
