The similanties and differences of thread ring gage/gauge and plug gauges/gage.

The similanties of thread ring gages/gauges and thread plug gauge/gage: A. thread ring gage/gauges and plug gauge/gage are tool for measuring screw thread. B. thread ring guage/gage and thread plug gages/gauges are high Precision products. C. thread ring gauge/gages and thread plug gages/gauge have “go” and “no go”.

The differences of thread plug gages /gauges and thread ring gauges/gages: thread ring gages or gauges are round , “go” and “no go”, they are separate. And ‘GO’ is relatively thick, however, the “no go” is relatively thin. , “go” is remaked by T ,   the ‘no go ’ is remarked by Z .As to thread plug gages/gauges, the plug gauges/gages like a stick , put “go” in a hand of plug gage or gauge, put the “no go ” in another hand of plug gages/gauges. Then the “go ” of thread plug gage/gauge is a little long , the ‘no go ’ of thread plug gauge/gage is a little short.