Sure you have to tweak the measure widget. Line 98 of the measure.php And around line 585 in the measure.js -- View this message in context: http://osgeo-org.1560.n6.nabble.com/Acres-in-the-Fusion-Measure-Tools-tp4481821p4879778.html Sent from the MapGuide Users mailing list archive at Nabble.com.