1.带电源开关 Manual power on/off.
2.任意位置清零和公英制转换 Zero setting and mm/inch conversion at any position.
3.带数据输出口 With data output interface.
4.便于测量较浅的外沟槽尺寸及小孔直径 The narrow tip jaes fit into very small grooves or track,making many previously difficult outside measurements easier to obtain.
5.75mm和100mm不带滚轮 Without thumb wheel for range 75mm and 100mm.