Use the Measure button to measure distances on your map. Use the measure tool to specify a measurement unit. You can measure distances on your map in feet (ft), miles (mi), meters (m), or kilometers (km).
The map units must be set appropriately in order to get accurate measure results. The map units are the units your data is stored in. By default, ArcExplorer sets the map units to decimal degrees.
How to measure a distance:
Click the Measure button.
Point to one of the measure units.
Click and drag a line defining the distance you would like to measure.
The segment and total measures appear in the upper left corner of the map.
How to clear the measure totals:
Double-click on the map to clear the measure totals and end measuring.
Tips:
If the measure results seem incorrect, verify that the map units are set appropriately. You can set the map units by clicking the View menu, clicking Scale Bar Properties, pointing to Map Units, and then clicking the appropriate unit.
You can clear the measure totals by clicking the Measure button and clicking Clear Measure Totals.