Determining Scale and Distance

Nicolas MalloyAuthor: Nicolas R. Malloy

In this tutorial, you will learn how to measure distances and determine an unknown scale. You can follow along by downloading and printing the Arcata North USGS Topographic Quadrangle.

Learning Outcomes

Students who successfully complete this tutorial should be able to:

  • Measure distances using a graphic scale
  • Determine Distance using geographic coordinates
  • Determine an unknown scale using a reference map

Part 1: Measuring Distance with a Scale Bar


Part 2: Measuring Distance using Geographic Coordinates


Part 3: Determining the Scale of an Aerial Photograph