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Measurement-by-Light-Wave-Interference

What is tolerance on thickness for Type-B (Grade I) opticals flats?


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This Chapter Measurement-by-Light-Wave-Interference consists of the following topics

Which of the following is not the dimension of optical flat Type A as per IS : 5440—1969 in mm ?

What is tolerance on thickness for Type-B (Grade I) opticals flats?

Which of the following statement is true for optical flats?
Statement 1: Type-A optical flats are tested for parallelism of working surfaces.
Statement 2: Flatness of working surface is tested by comparing with a master flat.

What is the tolerance on thickness for Type-B (Grade I) opticals flats?

Measurement by Light-Wave Interference

Engineering-Metrology