Lakc
Well-Known Member
steamnut2010 said:For critical work, I use the various sized micrometers, and use the expanding thingys (help me out here with the name) for measuring inside the bore.
The expanding thingy springs out, and you lock it, then put the micrometer on it.
Im gonna take a wild guess here but since the expanding thingy "locks" then its likely what I call a telescoping gauge, or T-gauge for short. ;D