This accurate precision tools are suited for checking location, hole size, gage slots, distance between holes, go & no-go gage, setting other gages and calibrating micrometers.
Each set furnished with case and every size gage holes clearly marked for size
Heat treated to a hardness of 60/62 RC
Size etched on each pin gage
Centerless lapped with 10 micro finished
Uniform 2" overall length and have no sharp corners