A caliper has 1 mm main scale divisions and 10 vernier divisions spanning 9 of them. Its least count is:
A0.1 mm
B1.0 mm
C0.01 mm
D0.9 mm
Answer & Solution
Correct answer: A. 0.1 mm
Least count equals S/n, so 1 mm divided by 10 gives 0.1 mm.
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