The pitch of a screw-gauge having 50 divisions on its circular scale is 1mm. When the two jaws of the screw gauge are in contact with each other, 47^(th) division of circular scale is on the reference line. When a wire is placed between the jaws. 3 linear scale divisions are clearly visible while 31st division on the circular scale coincides with the refference line. Then
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are you asking about the diameter of the cylinder give some clarity of that question
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