A screw gauge has 50 divisions on its circular scale. The circular...

A screw gauge has 50 divisions on its circular scale. The circular scale is 4 units ahead of the pitch scale marking, prior to use. Upon one complete rotation of the circular scale, a displacement of

0 . 5mm

is noticed on the pitch scale. The nature of zero error involved and the lest count of the screw gauge, are respectively:

Options

ANegative, $2\mum$
BPositive $10\mum$
CPositive $0 . 1mm$
DPositive, $0 . 1\mum$

Correct answer

B. Positive $10\mum$

Step-by-step solution

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