pipe-wall gauge

例句：

1. 1. The engineer used the pipe-wall gauge to measure the wall thickness of the pipeline.
   工程师使用管道壁厚规来测量管道壁的厚度。
2. 2.The manufacturer is required to comply with the pipe-wall gauge regulations for safety reasons.
   制造商必须遵守管道壁厚规规定，出于安全原因。
3. 3. The pipe-wall gauge was used to ensure that the pipeline was within the required thickness limits.
   管道壁厚规被用来确保管道符合所需的厚度限制。