The pin gauges are used to measure the hole distance, the pitch diameter of the thread, etc.

针规适用于机械加工中孔径、孔距、内螺纹小径的测量，特别适于弯曲槽宽及模具尺寸的测量。

youdao

The pin gauges are used to measure the hole distance, the pitch diameter of the thread, etc.

针规适用于机械加工中孔径、孔距、内螺纹小径的测量，特别适于弯曲槽宽及模具尺寸的测量。

youdao