M

Mr. Dubey • 52.30K Points
Coach 

Q. used for setting of helix angles in universal micrometer?

(A) 1’
(B) 2’
(C) 3’
(D) 4’
Correct : Option (A)

Explanation: 
 the permissible error which is allowed in the entire range of column rotation is ± 5′. a clinometer is used to check this which is of 1′ least count. the clinometer is put over column top. given inclination is further checked with clinometer.

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