ISRO Mechanical & Aerospace 2008 - Question 34

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Topic: Metrology

Plug gauges are used to

  • A. Measure the diameter of the workpieces
  • B. Measure the diameter of the holes in the workpieces
  • C. Check the diameter of the holes in the workpieces
  • D. Check the length of the holes in the workpieces

Answer: C. Check the diameter of the holes in the workpieces

Explanation: Plug gauges are used to check the diameter of the holes in the workpieces (they check if the hole is within specified tolerance limits, not measure the exact dimension).

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