What is an graphic scale?

A graphic scale, also known as a bar scale or scale bar, is a visual representation on a map that indicates the relationship between distance on the map and actual distance on the ground. It typically consists of a line marked with intervals that represent specific distances, allowing users to measure real-world distances by comparing them to the scale. Unlike numerical scales, graphic scales remain accurate even if the map is resized. They are commonly used in cartography to enhance the usability of maps.