Units Sub TabUse the Units sub tab to customize measurement units.To access the Units sub tab1. Press MENU twice to open the Main Menu.2. Use the ROCKER to select the Setup tab, and then selectthe Units sub tab.Units Sub TabDistance and Speed—select the unit to show your speed anddistance traveled.Direction Display—select the unit to show your direction. Mils is aunit of angle measurement used in military settings, in which 17.78mils equal one degree.Temperature—select the unit to show the temperature.Elevation—select the unit to show your altitude.Depth—select the unit to show the depth.Location Sub TabUse the Location sub tab to change location setting information.To access the Location sub tab1. Press MENU twice to open the Main Menu.2. Use the ROCKER to select the Setup tab, and then selectthe Location sub tab.See the “Appendix” for more information about location formatsand map datums. Also visit the National Imagery and MappingAgency at http://www.nima.mil for more information on grids anddatums.Changing the Location FormatWhen you change the Location Format, you change the coordinatesystem in which a given location reading appears. The defaultformat is latitude and longitude in degrees, minutes, and thousandthsof a minute (hddd°mm.mmm). Only change the location format ifyou are using a map or chart that specifies a different location formator want to use a format you are familiar with.Selecting a Different Map DatumDatums are used to describe geographic positions for surveying,mapping, and navigation and are not actual maps built in the unit.Only change the datum if you are using a map or chart that specifiesa different datum.84 GPSMAP 276C Owner’s ManualM AIN MENU > SETUP TAB