Updating direct draw
The emap, 76 family, and etrex store waypoints in 3 dimensions by including altitude. The 76 family will also store depth data for water if an optional depth sensor is attached.
It will automatically increment until it finds an empty number.
You simply hit the MARK key, on the G-III, etrex, 76, and emap press and hold the ENTER key, and the waypoint entry form will appear.
The location you were at the moment you pressed the button is already saved in the waypoint information on the form so even if you are traveling at 65 miles per hour down the freeway you can reliably capture a single point with the press of the button.
------------- /- __._FT - used with averaging to indicate FOM ------------- AVERAGE? Averaging will continue until you finally select save and enter.
While averaging is going on the unit will display a FOM, figure of merit, number to indicate the probable accuracy of the average to this point.