Topic: Physics Units of Measurement       Subtopic: Measuring instruments

What is least count of screw gauge?

Answer: The smallest reading up to which a screw gauge can be measured is called least count of screw gauge. It can be find out by following method; L.C = pitch of screw gauge ⁄ no. of divisions on circular scale i-e 1mm⁄100 = 0.01 mm

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