Instrument P. Dial indicator Q. Pneumatic gauge R. GO/NOGO

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Instrument
P. Dial indicator
Q. Pneumatic gauge
R. GO/NOGO gauge
Principle of inspection
1. Non contact
2. Limit of size
3. Comparator

1. P Q R
  2 3 1
2. P Q R
  3 1 2
3. P Q R
  1 2 3
4. P Q R
  2 1 3

Correct Option: B

P-3, Q-1, R-2