It normally used vernier caliper, fitter disc, steelruler, and other frequently used tools.
划线时，通常使用游标卡尺、钳工划线盘、钢直尺等常用工具。
2
In the construction of the highway project, the highway line is generally controlled by the middle stakes and the width of highway is measured with a steelruler from the middle stakes to both sides.
公路工程施工中，公路线形一般由中桩控制，公路宽度是用钢尺自中桩向两侧丈量。
3
Data output provide ruler of plate for steel plate, improve the efficiency of using steel plate.