Question

how can the least count of screw gauge be decreased​

Answer 1

Answer:

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Explanation:

If we use a metre scale for measurement of length, it may have graduations at 1 mm division scale spacing or interval. A Vernier scale on caliper may have a least count of 0.2 mm while a micrometer may have aleast count of 0.01 mm. ... Instruments of higher precisioncan reduce the least count error.