The reading on the vernier caliper is determined by adding main scale and vernier scale reading.
The diameter of a piece of wire can be measured using Vernier caliper.
The following steps can be used to measure the diameter of the Vernier caliper;
Thus, the reading on the vernier caliper is determined by adding main scale and vernier scale reading.
Learn more about veriner calipers here: https://brainly.com/question/14312914