Question

Q.46 The pitch of a screw gauge is 0.5 mm and there are 100
divisions on it circular scale. The instrument reads +2
divisions when nothing is put in-between its jaws. In
measuring the diameter of a wire, there are 8 divisions
on the main scale and 83rd division coincides with the
reference line. Then the diameter of the wire is
(1)4.05 mm
(2)4.405 mm
(3)3.05 mm
(4) 1.25 mm​

Answer 1

The diameter of the wire is

4.405 mm.