Question

how can the least count of a screw gauge decreased​

Answer 1

Here is your answer ↙️↙️☺️☺️✌️✌️

Ans ➡️ 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 0.01 mm while a micrometer may have a least count of 0.001 mm. ... Instruments of higher precision can reduce the least count error.

Hope this helps you mate ☺️☺️✌️✌️✅✅

Answer 2

by removing the number of impurities