At which part of the precision straight edge is generally lapped?

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Mr. Dubey

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📊 Metrology and Measurements

Q. At which part of the precision straight edge is generally lapped?

(A) edges only
(B) base only
(C) base and edges both
(D) all over the surface

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✅ Correct Answer: (A) edges only

Explanation: straight edges are extremely useful for setting up machines such as planers. precision straight edges are hardened and lapped on the edges by a small radius, which makes a blunt knife edge straight to a few thousands of an mm.

Explanation by: Mr. Dubey

straight edges are extremely useful for setting up machines such as planers. precision straight edges are hardened and lapped on the edges by a small radius, which makes a blunt knife edge straight to a few thousands of an mm.

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