
Explore GeoIndex maps with the
overview and magnifier
Overview
The Overview window displays a small map with a larger extent
than the current map. The current map's extent is shown
in this window with a red rectangle.
- Display the Overview window by clicking the overview icon
in the navigation toolbar.
- As you zoom the map in or out, the Overview map's extent may change so it shows an area somewhat larger than the
main map.
Magnifier
The Magnifier window allows a close-up view of a small
portion of the main map.

Topography Crown Copyright. All rights reserved. BGS OS licence no. 100017897/2009
- To display the Magnifier window,
click the Magnifier icon
on the navigation toolbar.
- The Magnifier window can be moved,
collapsed and closed as desired. See
Getting Started
for details.
- To magnify an area of the map, move the Magnifier window
over the area by dragging on its title bar. A small
red rectangle shows the area that will be magnified. Once
you drop the Magnifier on a location, a zoomed-in
view of the area will display within the Magnifier window.
- The amount of magnification can be changed with the
drop-down list in the lower left of the Magnifier window.