Julixing Instruments

Julixing Instruments

 
Julixing Instruments

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What is the difference between GO, NOGO and Master Gauges?

When specifying plain cylindrical gages you need to identify three parameters: Gage Size; Gage Tolerance; Gage Function.

Usage is specified by the applying the terms: GO; NOGO; or Master.

GO, NOGO and Master cylindrical plain gauges have different intended uses.

A GO cylindrical plain gage is intended to go into/onto the piece being tested. The GO is testing the maximum material condition.

A NOGO cylindrical plain gauge is intended not to go into/onto the piece being tested. The NOGO is testing the minimum material condition.

A Master cylindrical plain gage is intended to be used as a master for setting another tool or gauge to size.

Tolerances are applied differently to cylindrical plain ring gauges than they are to cylindrical plain plug gages.


Size difference example = 1.0000" X cylindrical plain ring gage.

1.0000" X GO = nominal size -X = 1.0000"-0.00006" = actual gauge size range of: 0.99994"/1.00000"
1.0000" X NOGO = nominal size +X = 1.0000"+0.00006" = actual gage size range of: 1.00000"/1.00006"
1.0000" X Master = nominal size +/-X/2 = 1.0000"+/-0.00003" = actual gauge size range of: 0.99997"/1.00003"

Size difference example = 1.0000" X cylindrical plain plug gage.
1.0000" X GO = nominal size +X = 1.0000"+0.00006" = actual gauge size range of: 1.00000"/1.00006"
1.0000" X NOGO = nominal size -X = 1.0000"-0.00006" = actual gage size range of: 0.99994"/1.00000"
1.0000" X Master = nominal size +/-X/2 = 1.0000"+/-0.00003" = actual gauge size range of: 0.99997"/1.00003" 

    Standard:       IEC 61032 IEC 60061 IEC 60335 IEC 60529 IEC 60068 IEC 60695 VDE 0620 UL AS/NZS3112
    TAG:
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