Garmin StreetPilot GPS, Owner'S Manual And Reference Manual, Page: 24 / 90

If you are driving along a road which is shown on the map, the vehicle pointer will
often be shown moving right down the road. This occurs when your location and the
direction you are driving indicate that you are probably on that street. While the
StreetPilot does its best to show you on the correct street, there are times when the Map
Page may momentarily show you on one street, and you are actually driving on another,
due to the inherent accuracy limitations of GPS and the mapping information.
Zooming
By now, you are probably familiar with the
Zi
and
Zo
keys,
and how they change the map display. The map scale is shown at
the lower left corner of the map display area. In the example at
right, the map scale is 1/4 mile between the two tick marks. If the
Map Page is displaying map information from a MetroGuide Data
Card, the word ‘metroguide’ is written below the map scale, shown
at right.
It is possible to zoom the Map Page to a scale which is too small
for the resolution of the stored map information to be displayed with
as high a resolution as normal. If this is the case, the word ‘over-
zoom’ is written below the map scale, shown at right.
When you are driving on city streets or roads that are within a MetroGuide coverage
area, more detailed map scales (for example, 800 feet or less) may be more helpful, since
they give you a good view of all streets, not just the major thoroughfares. On the other
hand, you may find that map scales of 2 miles or greater are more practical for freeway
driving, especially in rural areas.
The distance between
these two tick marks is
1/4 mile
Ù
14
reference
Z Zoooom miinngg