To measure hole of diameter 2 mm, which of the following instrument is used?

This question was previously asked in
ISRO SAC Technician B Fitter 6 Nov 2016 Official Paper
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  1. Pin gauge
  2. Internal micrometer 
  3. Bore gauge
  4. Slip gauge

Answer (Detailed Solution Below)

Option 1 : Pin gauge
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ISRO Technician B: Fitter Full Test 1
60 Qs. 180 Marks 90 Mins

Detailed Solution

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Explanation:

Pin gauge

  • Sets of cylindrical pin gauges are available for checking the diameter of small holes.
  • In a typical set, the pins range from 0.45 mm to 1.5 mm in steps of 0.05 mm.
  • For larger holes, taper pin gauges are used.
  • It is used to measure 5 mm to 15 mm hole.

 

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