两脚规

例句：

1. 1. This ruler is used to measure the length of a pencil.
   这个尺子用来测量铅笔的长度。
2. 2. The engineer used a two-foot rule to check the accuracy of the measurements.
   工程师用一个两英尺的尺子来检查测量的准确性。
3. 3. The carpenter measured the width of the door before cutting it.
   木匠在切割门之前测量了门的宽度。