Open map List

Scale Bar

A scale bar in cartography is a graphical representation of map scale that shows the relationship between map distance and real-world distance. It helps users interpret distances accurately on a map by providing a visual reference.

Basic

Introduction

Key Characteristics of a Scale Bar:

  1. Graphical Representation – Usually displayed as a segmented line with numerical values indicating real-world distances.
  2. Shows Map Scale – Converts map measurements into real-world distances (e.g., kilometers, miles).
  3. Adapts to Map Scale Changes – Useful in digital maps and GIS, where users can zoom in and out.
  4. Maintains Spatial Accuracy – Helps users measure distances directly on a printed or digital map.

Explanation

Types of Scale Bars:

  1. Simple Bar Scale – A straight-line bar with evenly spaced segments labeled with distance units.
  2. Variable Scale Bar – Adjusted for maps with varying scale distortions (e.g., polar projections).
  3. Comparative Scale Bar – Displays multiple units (e.g., kilometers and miles) for international usability.

Examples

Example of a Scale Bar:

A 1:100,000 scale map may have a 10 km scale bar, meaning each unit on the bar represents 10 kilometers in real distance.

Outgoing relations