http://demo.esoftscript.com/mac/graphics/cad/screen-calipers-mac-edition/2010-09-21weekly1.00http://demo.esoftscript.com/mac/graphics/cad/screen-compass-mac-edition/2010-09-21weekly1.00http://demo.esoftscript.com/mac/graphics/cad/screen-protractor-mac-edition/2010-09-21weekly1.00