What is the formula for Vernier Constant?

Answer: The difference between the value of a single main scale division and one vernier scale division is known as the vernier constant. 

• As vernier calipers are based on the principle of aligning measurements between a vernier scale and the main scale to measure the smallest of the small macro bodies, it does have a little alignment glitch, which is nothing but the same vernier constant; hence it is also called as the least constant. 
• The minor count or the vernier constant of a vernier caliper is determined using the Smallest division on the exterior main scale divided by the Number of divisions on the Vernier scale. 
• Hence, the vernier constant of a vernier constant = Smallest division on main scale / Number of divisions on Vernier scale.