Assertion (A): Least count of all screw based instruments is same.
Reason (R ): Least count for all screw based instruments are found using the ratio of pitch per division of circular scale.
A. Assertion is True, Reason is True, Reason is correct explanation for Assertion.
B. Assertion is True, Reason is True, Reason is not correct explanation for Assertion.
C. Assertion is True , Reason is False.
D. Assertion is False, Reason is True.
