NPT
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| Gauge dimensions are as per ASME B1.20.1. Gauges are supplied as Basic Step & Min/Max Step. |
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| GAUGING EXTERNAL THREADS | GAUGING INTERNAL THREADS |
| With basic step Ring gauge | With basic step Plug gauge |
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The Basic Step gauge when screwed onto the threads of the component by hand, should be flush with the endof the component face within 1 turn, as shown above.
| With Min/Max step Ring gauge | With Min/Max step Plug gauge |
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When using a Min/Max Step type gauge, the end of the component face should be flush between the Minimum and Maximum steps.