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内螺纹百分表是一种专门用来测量内螺纹中径尺寸的工具。长期以来内螺纹(螺纹环规)的中径尺寸测量一直是沿用螺纹塞规(校对规)来检查的,而且是一种综合判断性的检查方法,质量不易控制。同时每种规格需用四套校对规,既浪费工时,又浪费材料。根据这一情况,我们结合生产实际,采纳了有关测量工具的优点,经过反复试验研究,终于试制成功。在生产中经过两年多的实际应用,确实证明比较实用,一把工具只换量脚就可以代替几百套螺纹塞规或校对规的测量。这种内螺纹百分表
The internal thread dial indicator is a special tool for measuring the diameter of the female thread. The long-term internal thread (thread ring gauge) diameter measurement has been used along the thread plug gauge (proof gauge) to check, but also a comprehensive and judgmental inspection method, the quality is not easy to control. At the same time each specification requires four sets of proofreading rules, not only a waste of time, but also a waste of materials. According to this situation, we combine the actual production, adopted the merit of measuring instruments, after repeated experimental studies, and finally trial success. After more than two years of practical application in production, it really proved to be more practical. Instead of measuring several hundred sets of thread plug gauges or proof gauges, a tool only needs to be changed. This internal thread dial indicator