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The circular scale of a screw gauge has 50 divisions and pitch of \( 0.5 \mathrm{~mm} \). Find the diameter of sphere.
\( \mathrm{P} \) Main scale reading is 2 . One main scale division is \( 0.5 \mathrm{~mm} \).
W
(A) \( 1.2 \mathrm{~mm} \)
(B) \( 1.25 \mathrm{~mm} \)
(C) \( 2.20 \mathrm{~mm} \)
(D) \( 2.25 \mathrm{~mm} \)
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