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。
The pin gauges are used to measure the hole distance, the pitch diameter of the thread, etc.
在车缝物料上下高低位的过程中始终保持针距均匀，从而使车出之物品，不起皱，没刮痕。
It can maintain the stitches uniformly all through the whole up and down material stitching process, which attributed to making no wrinkle and scratch-free finished material.
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