角器

例句：

1. 1. The carpenterused a square to measure the angle ofthe door hinges.
   木匠用一个直角尺来测量门铰链的角度。
2. 2.The angler's tool is essentialfor fishing.
   钓鱼时，鱼钩是必需的。
3. 3. The angler's toolhelps to accurately measure the angle of thefishhook.
   鱼钩的角度通过鱼钩工具准确测量。