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The Utility of GPS On Land
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100,000-Meter Square Identification accuracy azimuth central meridian chapter checkpoint contour lines control points coordinate system course datum destination determining direction developed differential GPS display distance earth's surface Easton elevation equator Evans Mills example Finally function geographic coordinates Global Positioning System GPS equipment GPS receiver units GPS unit graphic grid line labels Grid Zone Designation ground horizontal identify land navigation landmark large numerals LAT/LON latitude and longitude lensatic compass longitude magnetic declination map datum map Figure map sheet map's maps produced margin measured meters MGRS/UTM grid move option oriented perpendicular portrayal portrayed position fixes position reports prime meridian protractor real world report positions road route satellites Scale USGS segment setup slope specific techniques terrain association terrain features tick marks tion topographic maps Trimble U.S. Army unit's UTM Grid Coordinate UTM grid zone values various waypoint wish