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What is the hardness of measuring faces of anvil and spindle?

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What is the hardness of measuring faces of anvil and spindle?

(a) 800 HV

(b) 600 HV

(c) 1000 HV

(d) 100 HV

I had been asked this question in an online quiz.

This question is from Micrometers topic in section Linear Measurements of Engineering Metrology

1 Answer

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Right answer is (a) 800 HV

For explanation I would say: Measuring faces of anvil and spindle has a hardness of about 800 HV or 62 HRC. Faces may be tipped with tungsten carbide.

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