Customizing Your DeviceMontana 600 Series Owner’s Manual 33Changing the Units ofMeasureYou can customize units of measure fordistance and speed, elevation, depth,temperature, and pressure.1. Select > Setup > Units.2. Select a measurement type.3. Select a unit of measure for thesetting.Time SettingsSelect > Setup > Time.• Time Format—allows you toselect a 12-hour or a 24-hourdisplay time.• Time Zone—allows you to selectthe time zone for the device. Youcan select Automatic to set thetime zone automatically based onyour GPS position.Position Format SettingsNOTE: Do not change the positionformat or the map datum coordinatesystem unless you are using a map orchart that specifies a different positionformat.Select > Setup > Position Format.• Position Format—sets the positionformat in which a given locationreading appears.• Map Datum—sets the coordinatesystem on which the map isstructured.• Map Spheroid—shows thecoordinate system the device isusing. The default coordinatesystem is WGS 84.Heading SettingsYou can customize the compasssettings.Select > Setup > Heading.