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what is the least count of steel rule in inch.

a) 1/64, b) 25.4 c) 24.5 d) 2.54

Your Answer

A Vernier scale on caliper may have a least count of 0.02 mm while a micrometer have least count of 0.01 mm. The least count error occurs with both systematic and random errors. Instruments of higher precision can reduce the least count error.

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