Table of Contents

- Working with Scale
- Measuring Distance Using a Graphic Scale
- Calculating Slope When Determining Distance
- Converting Map Distance to Ground Distance Using a Representative Fraction (RF)
- Determining Scale Using a Representative Fraction

# Measuring Distance Using a Graphic Scale

In this chapter, you learned that a **scale bar** is a graphic symbol representing ground distance. You also learned that scale bars come with an **extension scale**, which is an addition to the left of the zero on the scale bar. Scale bars have the advantage of maintaining the correct proportion when enlarging or reducing map size.

In this example, two points of interest, point A and point B are measured by drawing a line between them.

On a separate piece of paper, write down the answers to the following questions:

- What is the approximate distance in
*kilometers*between point A and B? - What is the approximate distance in
*meters*between point A and B?

- What is the approximate distance in
*miles*between point A and B?

- What is the approximate distance in
*feet*between point A and B?