The pitch of screw gauge is 1 mm and there are 100
divisions on circular scale. While measuring diameter
of a wire, linear scale reads 1 m; and 39th division of
circular scale coincides with reference line. The zero
error is -0.05 mm. The correct diameter of wire is
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Answer:
Explanation:
given pitch equals to 1 mm
CSD = 50
therefore least count equals to pitch by
CSD
equals to 1/50=0.02mm
1MSR= 3mm
1 CSR = 31
error(e)= 6xL.C
= 6x0.02
= 0.12mm
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