'GO' and 'NO GO' are provided on the same end in a ________

This question was previously asked in
ISRO VSSC Technician-B (Fitter) Official Paper (Held On: 14 July 2021)
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  1. Snap gauge
  2. Double-ended plug gauge
  3. Depth gauge
  4. Progressive gauge

Answer (Detailed Solution Below)

Option 4 : Progressive gauge
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Explanation:

Progressive plug gauge:

  • Plain cylindrical gauges are used for checking the inside diameter of a straight hole.
  • Both Go and No Go diameters are stepped on a single gauge member, so parts can be inspected in one easy operation.
  • Members are securely attached to either a taper-lock handle or a tri-lock handle with mounting bolts.
  • The ‘Go’ gauge checks the lower limit of the hole and the ‘No- Go’ gauge checks the upper limit.
  • The plugs are ground and lapped.

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Double-ended plug gauge:

  • In a combination go/no-go plug gauge (also called a double-ended plug gauge), the gauge handle has a go plug gauge extending outwards from one side of the handle and a no-go plug gauge extending outwards from the opposite side.

Snap gauges:

  • Snap gauges are a quick means of checking diameters and threads to be within certain limits by comparing the part’s size to the present dimension of the snap gauge.
  • Snap gauges are generally C-shaped and are adjustable to the maximum and minimum limits of the part being checked.
  • When in use, the work should slide into the ‘Go’ gauge but not into the ‘No-Go’ gauging end.

Ordinary depth gauge:

  • Ordinary depth gauge is a semi-precision instrument used for measuring of depth of recesses, slots, and steps.
  • Available in the ranges of 0-200 mm.
  • Ordinary depth gauge is used to measure an accuracy of 0.5 mm.
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