level testing instrument

例句：

1. 1. The engineer used a level tester to ensure the accuracy of the machine's level.
   工程师使用水平测试仪确保机器的水平精度。
2. 2. The level tester was used to check the depth of the well.
   水平测试仪被用来检查井的深度。
3. 3. The level tester showed that the water level had risen by two centimeters.
   水平测试仪显示水位上升了两厘米。