Plain Plug Gauges for Accurate Hole Measurement

 


Manufacturing precision parts requires measuring holes accurately to ensure components fit together properly. Plain plug gauges provide simple, reliable measurement, checking whether holes meet specifications without expensive equipment or complex procedures. 

How Plain Plug Gauges Work in Quality Control 

Our plain plug gauges come as go/no-go sets containing two gauges. The go gauge should enter the hole easily if the hole is within tolerance on the minimum size. The no-go gauge shouldn't enter if the hole is within tolerance on the maximum size. This quick check confirms holes are neither too small nor too large. 

Parish Engineering supplies plain plug gauges for workshops and manufacturing businesses needing reliable measurement tools. These gauges work on cylindrical holes in various materials, including metals, plastics, and composites.  

Choosing Correct Gauge Sizes and Types 

Gauge selection depends on hole size, tolerance requirements, and production volume. Plain plug gauges cover metric and imperial sizes, matching engineering drawings and specifications. Standard sizes suit common hole dimensions, while custom gauges handle non-standard specifications. Sets covering size ranges help workshops measure various hole sizes without individual gauges for each dimension. 

Maintaining Gauge Accuracy Over Time 

  • Regular Calibration – Periodic checking ensures gauges remain within tolerance 

  • Proper Storage – Protecting gauges from damage and contamination 

  • Clean Usage – Wiping gauges before and after use prevents debris affecting measurements 

  • Careful Handling – Avoiding drops or impacts maintaining gauge precision 

We supply standard sizes, custom gauges, and complete sets covering measurement requirements for manufacturers. 

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