1.可⽤于测量内径尺⼨ For internal measurements. 2.带可换测头，测量范围⼤ Changeable anvils for wide measuring ranges. 3.配千分表 Equipped with a micron dial indicator. 4.可根据客⼾要求改变L⻓度 The length of L can be changed according to customer’s requirement.
