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The pitch of a screw gauge is 1 mm and t...

The pitch of a screw gauge is 1 mm and there are 100 divisions on circular scale. When the two studs of the screw gauge are touching each other, the `32^(nd)` division of the circulasr scale coincides with the reference line / base line / index line on the pitch scale. When a glass plate is placed in between the studs firmly, the pitch scale reads 4 divisions and the circular scale reads 16 divisions
Zero correction of the instrument is

A

0 mm

B

`+ 0.32 mm`

C

`-0.32 mm`

D

`+4 mm`

Text Solution

Verified by Experts

The correct Answer is:
C
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