Arneth's scale

例句：

1. 1.The engineer used a ruler to measure the length of the beam.
   工程师用直尺测量了梁的长度。
2. 2. The scientist used a caliper to measure the diameter of the pipe.
   科学家用卡钳测量了管道的直径。
3. 3.The architect used a scale model to visualize the design on paper.
   建筑师用比例模型在纸上可视化设计。