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Least count of a screw gauge from pitch and circular scale divisions

This type of question, asked 2 times: 24 Jan 2025, 4 Apr 2026 S1. All 2 questions below, oldest first.

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  1. Question 1

    24 Jan 2025

    22
    The least count of a screw guage is 0.01 mm . If the pitch is increased by 75%75\% and number of divisions on the circular scale is reduced by 50%50\%, the new least count will be _____\_\_\_\_\_ ×10−3 mm\times10^{- 3}\text{ }mm.

  2. Question 2

    4 Apr 2026 S1

    1
    In a screw gauge when the circular scale is given five complete rotations it moves linearly by 2.5 mm . If the circular scale has 100 divisions, the least count of screw gauge is ____\_\_\_\_ mm.

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