Presents the common issues in using digital callipers.
提出一些使用数字卡尺时常见的问题。
2
To calculate the key measurement Dr Manning recommends photocopying the right hand and measuring the length of the index finger and ring finger, using accurate callipers.
为了测量关键数据，曼宁教授建议把右手影印下来，用精确的千分尺测量食指和无名指的长度。
3
Once there, they use tape measures, callipers and a hand-held laser to measure the heights and girths of all the trees within a 500-square-metre plot.