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.

目前，国内外在单株立木直径测量过程中，主要使用的还是需人工读取和记录测量数据的测径围尺或轮尺等树木测量工具。

youdao

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。

youdao

Methods Using vernier caliper to measure the growth lengths of the fingernails, precisely calculated the daily growth rates.

方法运用游标卡尺测量指甲生长长度，计算每日生长速率。

youdao