question_answer

The pitch of a screw gauge is 1mm and there are 100 divisions 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 division on the circular scale are observed. Determine the diameter (in mm) of the wire.

Answer:

2.63