Presently in standing tree's diameter measuring process, the main tools are tape meter or caliper, which need manpower to read and record measure data.
This article mainly introduces the method that adopts gear caliper to measure the median diameter normal tooth thickness of double-line trapezoidal thread.
本文主要介绍了采用齿轮卡尺测量双线梯形螺纹中径法向齿厚的方法,同时也测量出螺距产生的误差。
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Methods Using vernier caliper to measure the growth lengths of the fingernails, precisely calculated the daily growth rates.