Question

1. The pitch of a screw gauge is 0.5 mm and the num-
ber of divisions on the circular scale is 100. When
a glass plate is held between the studs of the screw
gauge, the main scale reads 1.5 mm and the 69th
division of the circular scale coincides with the
index line of the main scale. What is the thickness
of the glass plate​

Answer 1

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