notch gauge

例句：

1. 1.The engineer used a notch gauge to measure the thickness of the metal sheet.
   工程师使用刻度尺来测量金属板材的厚度。
2. 2.The carpenter used a notch gauge to mark the corners of the wooden frame.
   木匠使用刻度尺来标记木框的角落。
3. 3. The surveyor used a notch gauge to ensure that the measurements were accurate.
   测量师使用刻度尺以确保测量的准确性。