Kinds of Scale:
The given types of scales are commonly utilized in preparing engineering drawings as:
(a) Vernier Scale
(b) Diagonal Scale
(c) Plain Scale
Plain scale is created to measure lengths in two units merely that are units and sub- units that like yards and meters or feet and centimeters or decimeters and millimeters. During other words, we can employ a plain scale for reading only up to the first decimal position, as like an example, decimeter and meter, millimeter and decimeter.