A Compass tab in the left of the Map
Builder enables you to show a compass. This is useful when your map
is displayed using a coordinate system that makes it difficult to
recognize the direction.
If you change the projection of your map to, for example, Albers
Equal Area and then zoom in a number of times, you may lose your
sense of direction. However, if you click the Compass
tab you will see that it always indicates north as seen from the
center of the view.
The following figure shows the Compass tab
with the compass indicating north.
Compass tab
For more information, see Using
the Compass.