The NORIS go thread ring gauge is for gauging external threads. The go thread ring gauge checks the so-called mating dimension of the external thread and the screw-on capability.
The NORIS no-go thread plug gauge is for gauging internal threads. The no-go thread plug gauge checks whether the actual pitch diameter of the workpiece internal thread exceeds the specified maximum dimension.
The NORIS no-go thread ring gauge is for gauging external threads. The no-go thread ring gauge checks whether the actual pitch diameter of the workpiece external thread falls below the specified minimum dimension.
The NORIS go thread plug gauge is for gauging internal threads. The go thread plug gauge checks the so-called mating dimension of the internal thread and the screw-in capability.
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