Inside Groove Vernier Calipers with Cylindrical Contacts/圆柱头内沟槽游标卡尺

we have mono-block and  open-block for choice。

Features :
Flat measuring surfaces or spherical measuring surfaces are optional
Can measure the narrow inside groove in the hole..
Special-made orders require following specifications:
1.The diameter of the hole
2.The distance between the groove and the orifice
3.The width of the groove
4.The depth of any side of the grooves
5.The shape of the groove bottom