S scale The ratio of a single unit of distance on the map to the equivalent distance on the ground. For example, a scale represented as 1:15 840 means that one unit of distance on the map represents 15 840 of the same units of distance on the Earth. scalebar A map element that graphically shows the map’s scale. A scalebar may not be available for all maps. selection tips Brief, descriptive information or images related to a feature currently selected on a map. Selection tips display when you hover over the selected feature on the map.