General Studies · Metrology and Lapping
Which method or tool is commonly employed to evaluate the flatness of a lapped surface using an optical flat and monochromatic light?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Prussian blue method
- 2Chain drilling method
- 3Dial indicator method
- 4Light interference method (Optical Flat)✓
Correct answer
Light interference method (Optical Flat)
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