How to calculate the least count of vernier calliper?
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value of one main scale division (1m.s.d) =1mm
10 vernier scale division (V.S.D)= 9(M.S.D).
i.e, 10 V. S. D = 9 M.S.D OR
........ 1 V. S. D= 9/10 M. S. D.
Vernier constant (V. C) OR LEAST COUNT
= 1M.S.D - 1 V. S. D.
= 1M.S.D - 9/10 M. S. D.
V. C OR LEAST COUNT = ( 1 - 9/10) 1M.S.D
= 1/10 × 1M.S.D.
= 1/10 × 1mm
= 0.1 mm
V. C or Least count =0.01 cm.
10 vernier scale division (V.S.D)= 9(M.S.D).
i.e, 10 V. S. D = 9 M.S.D OR
........ 1 V. S. D= 9/10 M. S. D.
Vernier constant (V. C) OR LEAST COUNT
= 1M.S.D - 1 V. S. D.
= 1M.S.D - 9/10 M. S. D.
V. C OR LEAST COUNT = ( 1 - 9/10) 1M.S.D
= 1/10 × 1M.S.D.
= 1/10 × 1mm
= 0.1 mm
V. C or Least count =0.01 cm.
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The Vernier caliper least counts formula is calculated by dividing the smallest reading of the main scale with the total number of divisions of the vernier scale.LC of vernier caliper is the difference between one smallest reading of the main scale and one smallest reading of vernier scale which is 0.1 mm 0r 0.01 cm.
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