[mathematics] A scale bar graphically shows the distance on the map with units such as kilometers or meters. Scale bars are proportional to the scale of the map.

[remote sensing] Sidelap (or side overlap) consists of the overlapping edge areas of photographs between adjacent flight lines.

[coordinate system] Graticules are lines of latitude or longitude on a digital or hard copy map and assist in showing the geographic locations of map features.

[cartography] Locator maps show the extent of the primary map in relation to a larger extent area. It provides context to the map reader to gain a better understand of the overall area.