Thu July 19, 2012 By: Sathya Karthikeyan

how to measure the diameter of a sphere using a vernier calipers

Expert Reply
Thu July 19, 2012
Put the sphere diametrically between the jaws of the  callipers and close the callipers.
Now note the main scale reading just befor or on the 0th of the vernier scale. Let it be MSD.
Now find the vernier division coinciding with any of the main scale division. Let it be VSD.
Thus diameter is: MSD + (least count)(VSD)
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