Apollo 920 GPS User Manual page 28

Here are some examples of how zooming
works:
This screen shows
a 20 nautical mile
scale selection.
B
15
A distance of 20 nautical miles exists from the
airplane icon (near waypoint SLE) to the top
of the screen.
Selecting a
smaller map scale
reveals additional
detail, such as
runways.
This can be helpful when approaching the
destination waypoint.