The pitch of a screw gauge is \( 0.5 \mathrm{~mm} \) and there are 100 divisions on it circular ...

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The pitch of a screw gauge is \( 0.5 \mathrm{~mm} \) 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 83 rd division coincides with the reference line. Then the diameter of the wire is:-
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