coal tower scale

例句：

1. 1.The coal tower scale is used to measure the height of a coal stack.
   煤塔尺用于测量煤堆的高度。
2. 2. The engineer used the coal tower scale to ensure that the construction was accurate.
   工程师使用煤塔尺确保施工的准确性。
3. 3. The coal tower scale was used to measure the amount of coal in the mine.
   煤塔尺被用来测量矿井中的煤炭量。