13ReferenceThe Map PageZoom IN to view more mapdetails.Zoom OUT to view more maparea.Accuracy CircleZooming In and OutUse the Zoom keys (IN and OUT) to adjust the map scale,which is displayed at the bottom of the Map Page.To change the map scale:1. Press the IN Zoom key to select a scale that showsmore detail for a smaller map area.2. Press the OUT Zoom key to select a scale thatdisplays a larger map area, but with less detail.The map scale is shown in the lower left corner of the mapdisplay area. The scale is shown in the unit of measure selectedfrom the ‘Units’ field of the ‘General’ setup page. Refer to page32 for setup details.It is possible to zoom in so far that the resolution of themap data is exceeded and the appearance of the map will nolonger be accurate. When this occurs, the word “overzoom”will appear just below the map scale.When using a map data cartridge, the word“MapSource” will appear below the map scale when youzoom in to see more detailed map features. When drivingon city streets within a MetroGuide or other MapSourcecoverage area, more detailed map scales (800 to 300 feet)may be preferred since they provide a good view of allstreets and not just major roadways. When traveling onmajor roadways (highways and Interstates) map scales oftwo miles or more may be more practical.With certain types of MapSource data, such asMetroGuide data, the eMap may match your location toroads on the map. In these instances, the ‘Accuracy Circle’(discussed on page 5) will not be shown.You can control the display of map details at specificmap scales by using the Map Setup Options as explained onpage 17. Using the setup options allows you to create clearer,less “cluttered”, maps as you desire. Overzoom shown below theMap ScaleThe Map ScaleMap Scale when usingMapSource information ona map data cartridge.