Question

Explain the different types of scales in detail.

Answer 1

Scales on maps can be represented in three different ways. They are:

1. Statement or Verbal scale
2. Representative Fraction (RF) or Ratio Scale
3. Graphical or Bar Scale

• Statement or Verbal scale:

1. In this method, the map scale is stated in words i.e., 1 cm to 1 km.
2. It means 1 cm distance on the map corresponds to 1 km distance on the ground.
3. Thus it is written on the map like 1 cm to 1 km.

• Representative Fraction (RF) or Numerical Fraction or Ratio Scale:

1. It shows the relationship between the map distance and the corresponding ground distance in the same units of length.
2. R.F. is generally shown as a fraction.

• Graphical or Bar Scale or Linear Scale:

1. A graphic scale looks like a small ruler drawn at the bottom of the page.
2. This line is line is divided and sub-divided into lengths each of which represents a certain distance on the ground.
3. This scale has added advantage for taking copies of maps as the measurement does not change.