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The map projection-based coordinate system known as Universal Transverse Mercator (UTM) is used around the world for GIS data sets and for base maps in many countries. Most of the newer USGS 7.5 minute topographic quadrangles use UTM as their base map projection and have kilometers, tic marks, or grid lines representing UTM eastings and northings. Digital elevation models extracted from USGS quadrangles use UTM for their horizontal reference system. Recently, UTM has been adopted as the basis for the U.S. National Grid. Dozens of countries have adopted UTM for mapping.

UTM Parameters

UTM was designed by the U.S. Army Map Service. In 1947, it became the basis for the Military Grid Reference System (MGRS) between 80° south latitude and 84° north. Above 84° north and below ...

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