A vernier calipers has 20 VSD = 18 MSD and 1 MSD = 1 mm. Which statements are correct?

Select all that apply

• Option A

  Least count = 0.10 mm

• Option B

  Least count = 0.05 mm

• Option C

  If the 7th vernier division coincides, the vernier contribution is 0.70 mm

• Option D

  For the same MSD, a 20 VSD = 19 MSD vernier has better resolution