The image above is an example of a universal transverse Mercator (UTM). UTM offer locational information by referencing geographical locations with a coordinate system. The UTM is a rectangular coordinate system, meaning it is map projection (Transverse Mercator) overlain by a grid coordinate system. The UTM must always be georeferenced, as it provides measurements of area and distance across the globe. The UTM cuts the globe into 60 zones, mapping the globe from 80S to 84 N. The map above shows the distance of these zones, it may be a little distorted at higher elevations, but is still the most used rectangular coordinate system in the world.
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