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A screw gauge has a pitch of 1.0mm and 2...

A screw gauge has a pitch of 1.0mm and 200 divisions on the circular scale. Do you think it is possible to increase the accuracy of the screw gauge arbitrarily by increasing the number of divisions on the circular scale ?

Text Solution

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As least count
`="Pitch"/"Number of divisions on circular scale"`
`therefore` Theoretically speaking, least count decreases on increasing the number of divisions n the circular scale. Hence accuracy would increase. Practically, it may not be possible to take the reading precisely due to low resolution of human eye.
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