Vernier Caliper - Working Principle, Least Count, Measurement, Zero Error, Concept

In this video, I explain the principle behind the working of a Vernier Caliper. I first explain the basic logic behind its least count and how to calculate least count of any Vernier Caliper. Then I explain how to take measurements using a Vernier Caliper. Finally I explain how to check for any zero error in the instrument and make corrections for it.