Zooming and Scale
How do I Zoom to change the Map scale?
Zooming changes the Map scale and is accomplished in one of three ways:
1) Command bar ‘ Zoom’ and select scale
2) Menu > Zoom and select scale
3) Display the Navbox ‘ Zoom+’ or ‘Zoom-’ and press either button on screen
Note: It is also possible to assign the Zoom action to any one of the Navboxes displayed on screen, see Assigning Actions to Navboxes.