**Vernier Scale division types**

As we know vernier caliper is consist of two main parts which indicates reading are main scale and vernier scale. For proper reading of vernier caliper it is necessary to understand the relation of vernier scale to the main scale. So firstly we explain this relation.

**Relation of vernier scale to main scale:**

There is variety of vernier calipers is available and also so much variety possible so there are two types of vernier scale by the virtue of relation between both main and vernier scale which are called forward vernier and backward vernier.

**Forward vernier:**

Vernier scale is a small scale graduated in specific relation with main scale. For example let us say in metric calipers main scale has graduation in millimeter up to minimum 1mm.Vernier scale graduated in 10 divisions its means that the space of 9mm is divided into ten equal parts it shows ten vernier scale divisions are equal to 9 main scale divisions so the value of 1 vernier scale division is less than the value of 1 main scale division this type is called forward vernier so we can say one liner:

The vernier scale which has one vernier scale division value is lesser than one main scale division value is called **forward vernier.**

**Backward vernier:**

As explained above let spouse same metric main scale having minimum division of 1 mm and on vernier scale space of 11 mm is divided into ten equal parts which shows 10 vernier scale divisions are equal to 11 main scale divisions and it means one vernier scale division value is greater than one main scale division this type of vernier scale is called backward vernier.

The vernier scale which has one vernier scale division value is greater than one main scale division value is called **backward vernier.**