length measuring numeral display meter

例句：

1. 1.This length measuring instrument is used to measure the length of objects.
   这个长度测量仪器用于测量物体的长度。
2. 2. The engineer used a length measuring instrument to check the accuracy of the machine.
   工程师使用长度测量仪器来检查机器的准确性。
3. 3. The length measuring instrument was easy to operate and accurate in measurement.
   长度测量仪器操作简单且测量准确。