universal transverse Mercator grid
A grid coordinate system based on the transverse Mercator projection, applied to maps of the earth's surface extending to 84 N and 80 S latitudes. 1/8/73
Universal Transverse Mercator (UTM) grid
Military grid system based on the transverse Mercator projection, applied to maps of the Earth's surface extending from the Equator to 84 Degrees north and 80 degrees south latitudes