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Question
Define the term least count as applied to a vernier callipers.
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Solution
Least count of a vernier callipers is the difference between one main scale division (M.S.D.) and one vernier scale division (V.S.D.)
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RELATED QUESTIONS
Fig., below shows the reading obtained while measuring the diameter of a wire with a screw gauge. The screw advances by 1 division on the main scale when circular head is rotated once.
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The least count of a screw gauge can be lowered by increasing the number of divisions on its thimble.
