The pitch of a screw gauge having divisions on its circular scale is

PHYSICS · Subjective · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

The pitch of a screw gauge having

50

divisions on its circular scale is

1\,\mathrm{mm}

. When the two jaws of the screw gauge are in contact, the zero of the circular scale lies

6

divisions below the reference line. When a wire is placed between the jaws,

3

linear-scale divisions are clearly visible while the

31

st division on the circular scale coincides with the reference line. Find the diameter of the wire.