accurate measuring instrument

例句：

1. 1. The measurements of thenew model are more accurate than those ofthe old one.
   这款新模型的测量结果比旧款更准确。
2. 2. Thescientist used an accurate scaleto weigh the sample.
   科学家使用一个精确的秤来称量样品。
3. 3. The engineer made a careful calculation toensure the accuracy of his calculations.
   工程师仔细计算以确保他的计算准确无误。