The pig to receive clear caliper ball after tube, remove the clear the caliperplate pig, if caliper board did not obvious deformation, caliper qualified.
测径清管器到达收球筒后，拆下清管器上的测径板，若测径板没有明显变形，测径合格。
2
A slidable caliper head is additionally arranged on the scribing feet combined with the fixed plate, and the caliper head is provided with an adjustable scribing needle.
在与固定板结合的划脚上增加了一个可滑动的卡尺头，卡尺头上有一可调划针。
3
A circular arc fixed plate has the Angle scale, and one side of the circular arc fixed plate is prolonged as the caliper head which provided with two cylindrical pins.