The pitch of a screw gauge is and there are divisions on the circular scale

PHYSICS · Subjective · A Level · Physics · Measurements and their errors · Measurements and their errors

Problem

The pitch of a screw gauge is

0.5\,\text{mm}

and there are

50

divisions on the circular scale. In measuring the thickness of a metal plate, there are five divisions on the pitch scale (main scale) and the

34

th division coincides with the reference line. Calculate the thickness of the metal plate.