clock dial micrometer

例句：

1. 1.The clock dial was worn smooth from years of use.
   钟表的刻度因为多年的使用而变得光滑。
2. 2. The micrometer was used to measure the thickness of the material.
   微米计被用来测量材料厚度。
3. 3.The engineer used the clock dial and micrometer to check the accuracy of the machine.
   工程师使用钟表刻度和微米计来检查机器的准确性。