A screw gauge has 
divisions on its circular scale. The circular scale is 
units ahead of the pitch scale marking, prior to use. Upon one complete rotation of the circular scale, a displacement of 
is noticed on the pitch scale. The nature of zero error involved, and the least count of the screw gauge, are respectively.
A
Positive, 
B
Positive, 
C
Negative, 
D
Positive, 
Text Solution
Verified by ExpertsThe correct answer is:
B
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