eyepiece goniometer

例句：

1. 1.The surveyor used a compass to measure the angle of the building's roof.
   测量师使用指南针来测量建筑物屋顶的角度。
2. 2. The carpenter used a sextant to measure the angle of the roof.
   木匠使用六分仪来测量屋顶的角度。
3. 3. The engineer used a goniometer to measure the angle of the bridge.
   工程师使用测角仪来测量桥梁的角度。