angle steel ruler

例句：

1. 1. This angle steel ruler is perfect for measuring the angle of a roof.
   这个角钢尺非常适合测量屋顶的角度。
2. 2. He used an angle steel ruler to mark the corners of the wall.
   他用角钢尺标记了墙的角落。
3. 3.The construction worker needs an angle steel ruler to measure the length of the beam.
   建筑工人需要用角钢尺测量梁的长度。