Thread Check Inc. offers plain cylindrical ring gages for Go/No Go gaging and as masters. Plain ring gages are ideal for inspecting outside diameters of manufactured parts. With Go/No Go ring gages, an inspector can quickly pass/fail parts without taking time consuming readings from a measuring instrument. Plain ring gages are also ideal for use as masters for setting bore gages, air gages, and internal micrometers. By using the same size master ring gage, lead error on measurements can be eliminated. Plain ring gages are available in class XX thru class ZZ gagemaker tolerances. Plain ring gages are available in high quality tool steel and chrome coated for longer gage life.