meter key

例句：

1. 1.The engineer used a meter key to measure the length of the pipe.
   工程师用米尺来测量管道的长度。
2. 2. The construction workers used meter keys to mark the corners of the building.
   建筑工人使用米尺来标记建筑物的角落。
3. 3.The farmer used a meter key to measure the yield of his crops.
   农民使用米尺来测量他的农作物产量。