double scale instrument

例句：

1. 1. The engineer used a double scale ruler to measure the length of the wall.
   工程师使用双刻度尺来测量墙的长度。
2. 2. The doctor recommended a dual scale thermometer for accurate temperature readings.
   医生推荐使用双刻度温度计来进行准确的温度读数。
3. 3. The construction company uses double scale tools to ensure precision in their work.
   建筑公司使用双刻度工具以确保工作的精确性。