paper thickness gauge

例句：

1. 1. The thickness gauge is used to measure the thickness of paper.
   厚度计用于测量纸张的厚度。
2. 2. The thickness gauge was used to ensure that the paper was not too thin or too thick.
   厚度计被用来确保纸张既不太薄也不太厚。
3. 3.The thickness gauge was used to check the quality of the paper before it was printed.
   厚度计被用来检查印刷前的纸张质量。