What is UTMref?
UTMref stands for Universal Transverse Mercator (UTM) reference system. It is a coordinate system to locate positions on the Earth’s surface. The UTM system divides the Earth into a series of zones, each 6 degrees of longitude wide, and assigns a coordinate grid to each zone. This grid system uses easting (measured in meters east of a reference meridian) and northing (measured in meters north of the equator) coordinates to define locations within each zone.