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Pressure which is measured in minimum of perticular pressure gauge called its least counts.

Suppose in a pressure gauge range 0-6 is devided in to equally 6 parts for each 1 kg/sq cm and 1 parts devided in to itself by 10 division for each 1 kg/sq cm.

It means least count of such pressure gauge is 1 division of (0-6kg) /10 division of 1 kg.=0.1kg/sqcm

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Q: What is the significance of the least count of a pressure gauge?
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