hole-depth gauge

例句：

1. 1. The hole-depth gauge is used to measure the diameter of holes in materials.
   孔深规用于测量材料中孔的直径。
2. 2. The hole-depth gauge was used to ensure that the drilling was consistent with the specifications.
   使用孔深规确保钻孔符合规格。
3. 3. The hole-depth gauge was used to measure the depth of the hole before we started drilling.
   使用孔深规测量钻孔深度，以便我们开始钻孔。