Units Sub Tab
The Units sub tab allows you to customize measurement units for
the entire system. To open the Units sub tab, press MENU twice to
open the Main Menu. Select Setup from the vertical tab list. Then
select Units from the row of tabs along the top of the page.
Distance and Speed—select the unit to show your speed and
distance traveled.
Direction Display
—select the unit to show your direction. Mils is a
unit of angle measurement used in military settings, in which 17.78
mils equal one degree.
Temperature
—select the unit to show the temperature.
Altitude—select the unit to show your altitude.
Depth—select the unit to show the depth.
Vertical Speed
—select the unit to show your vertical speed.
Pressure
—select the unit to show the pressure.
Location Sub Tab
Refer to the “Appendix” of this guide for more information about
location formats and map datums. Also visit the National Imagery
and Mapping Agency at http://www.nima.mil for more information
on grids and datums.
Location Format Sub Tab
Changing the Location Format coordinates the system in which
a given location reading is shown. The default format is latitude
and longitude in degrees, minutes, and thousandths of a minute
(hddd°mm.mmm).
Map Datum Sub Tab
Datums are used to describe geographic locations for surveying,
mapping, and navigation and are not actual maps built in the unit.
The default setting is WGS 84. The unit automatically chooses the
best datum based on your chosen position format.
WARNING: Selecting the wrong map datum can result in
substantial location errors. You should only change the position
format if you are using a map or chart that specifies a different
position format or map datum or want to use a format you are
familiar with.When in doubt, use the default WGS 84 datum for
best overall performance.
120 GPSMAP 496 Owner’s Manual
MAIN MENU > SETUP TAB
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