Match the following Feature to be inspected P. Pitch and Angle errors of screw thread Q. Flatness error of a surface R. Alignment error of a machine sideways S. Profile of a cam Instrument 1. Auto Collimator 2. Optical interferometer 3. Dividing Head and Dial Gauge4. Spirit Level 5. Sine bar 6. Tool maker's Microscope

Match the following Feature to be inspected P. Pitch and Angle errors

1.	Match the following Feature to be inspected P. Pitch and Angle errors of screw thread Q. Flatness error of a surface R. Alignment error of a machine sideways S. Profile of a cam Instrument 1. Auto Collimator 2. Optical interferometer 3. Dividing Head and Dial Gauge4. Spirit Level 5. Sine bar 6. Tool maker's Microscope
A.	P-6, Q-2, R-4, S-6
B.	P-5, Q-2, R-1, S-6
C.	P-6, Q-4, R-1, S-3
D.	P-1, Q-4, R-4, S-2
Answer» D. P-1, Q-4, R-4, S-2

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