![]() The military implementation of UTM (Military Grid Reference System or MGRS) drops the small digits and indicates the 100,000 meter square by a two letter identifier. The millions and hundreds of thousands of meters are shown with small numbers and are sometimes dropped when giving UTM coordinate positions. Note that the large numbers adjacent to the tick marks around the perimeter of the map represent tens of thousands and thousands of meters. Measurements can be made using a gridded mylar overlay, a paper scale, or a coordinate reader. This narrows down the coordinate to a 100 meter or 10 meter square. To make UTM measurements, subdivide the 1,000-meter grid squares into tenths or hundredths. ![]() ![]() Some maps, including all those produced after 2009 ( US Topo maps) include full UTM grid lines. US Topo map showing latitude and longitude of the corner (38°N, -115.8750°W) and brown UTM gridlines (4,206,000 meters northing and 599,000 meters easting)Īlmost all USGS topographic maps produced after 1977 show UTM tick marks on the sides of the map (or a full-line grid) every 1,000 meters.
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