光滑极限塞规是一种具备以孔的实际尺寸为基准的测定面以及最小实际尺寸为基准的测定面的一种量规。

光滑极限塞规使用目的及使用方法

Purpose and procedures for use of limit gauges

■  通端塞规：Go plug gauge

本量规用于检查孔的直径是否大于被规定的实体尺寸，要能够轻易的通过孔的全长。

 This is a gauge to inspect whether the diameter of hole is larger than the  specified MML or not ,and this shall pass through the overall length of hole without any difficulty.

 ■  止端塞规：Not Go plug gauge

 This is a gauge to inspect whether the diameter of hole is smaller than the specified LML or not,and this shall not enter into the hole.