timber compass

例句：

1. 1. We used a timber compass to find our way back to the campsite.
   我们用一个木制指南针找到了回营地的路。
2. 2. The old man used his timber compass to navigate through the dense forest.
   那位老人用他的木制指南针在茂密的森林中导航。
3. 3. The carpenter used a timber compass to measure the length of the beam before cutting it.
   木匠用一个木制指南针测量了横梁的长度，然后才进行切割。