How does the autozoom work?
A. I’ll explain how autozoom works with my etrex while flying our skyhawk. I enter a route with several waypoints (typically navaids) and select to follow it to the destination airport. In autozoom mode the scale will automatically be displayed such that the first waypoint (on the route) is on the screen. As I fly closer to that waypoint the scale automatically zooms to a closer scale ( say from 12 mi. to 8 mi.;then continues with 5 mi., 3 mi., 2 mi., 1.2 mi., 0.8 mi., 0.5 mi., 0.3 mi., 0.2 mi., 800 ft., 500 ft., 300 ft., and then 200 ft.). After passing that waypoint (on the route) the etrex autozooms out again to give a scale whereby the NEXT waypoint (on the route) is displayed on the screen. The etrex, once again, continues zooming the scale as I approach that second waypoint (on the route list). This continues until reaching the destination (“Follow To”) waypoint which is typically an airport. Note, that the auto-zoom applies only to those waypoints that have been entered into the
