The pitch of a screw gauge is `1` mm and there are `100` division on its circular scale. When
Channel: Doubtnut
Date: 26/01/2020

The pitch of a screw gauge is `1` mm and there are `100` division on its circular scale. When nothing is put in between its jaws, the zero of the circular scale lies `4` divisions below the reference line. When a steel wire is placed between the jaws, two main scale divisions are clearly visible and `67` divisions on the circular scale are observed. the diameter of the wire is