1.ON/OFF开/关机 Manual power on off.
2.任意位置清零 Zero setting at any position.
3.mm/in任意位置公英制转换 Metric/Inch system conversion at any position.
4.ABS键任意位置进行相对测量和绝对测量互换 Absolute measurement and comparison measurement conversion at any position.
5.带数据输出口 With data output interface.