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GATE 2019 ME (ME2) – Question 27

Metrology and Inspection · Linear and angular measurements, comparators · 1 mark · Multiple choice

Which is the most common limit gauge for inspecting hole diameters?

  1. Snap gauge
  2. Ring gauge
  3. Plug gauge
  4. Master gauge

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Show answer and explanation

Correct answer: (C) Plug gauge

Explanation

A plug gauge enters the hole to test its internal diameter. Its GO member checks the maximum-material boundary,and its NO-GO member checks the opposite limit. **Plug gauge,C**. Ring and snap gauges primarily inspect external sizes.