twin ring gauge

例句：

1. 1.The engineer used a twin ring gauge to measure the diameter of the pipe.
   工程师使用双环规尺来测量管道的直径。
2. 2.The twin ring gauge was used to check the accuracy of the measurements.
   双环规被用来检查测量的准确性。
3. 3. The twin ring gauge is an essential tool for measuring the size of metal parts.
   双环规是测量金属部件尺寸的必备工具。