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AR15.COM
5/16/2010 5:30:10 PM EDT
Posted this in GD, should have started here.  Someone here knows this.

link
5/16/2010 5:46:07 PM EDT
[#1]
i cant say i know of any consumer grade GPS's that figure sq ft. maybe one of the contractor grade ones. of course all you need to know is length and width to figure out sq footage.
5/16/2010 5:49:24 PM EDT
[#2]
It's for a friend that is starting a yard spraying business.  So, there will be no square and easy math. It will be odd, irregular shapes.
5/16/2010 5:51:46 PM EDT
[#3]
ExpertGPS? Just guessing here, not sure if thats what he needs.
5/16/2010 8:38:57 PM EDT
[#4]
Most any of the major GPS systems out there can do a rough estimate... Without buying surveying epuipment thats all your going to get is an esitmate.

He may have to use the "Surveyors Formula" but if he has a laptop with him it will be easy.
5/16/2010 8:47:41 PM EDT
[#5]
They make "Contractor" calculators...and for measuring, he should use one of those measuring "wheels" likeyou see em using at const sites.

Just sayin
5/16/2010 11:02:44 PM EDT
[#6]
Many of the Garmin outdoor-type units will calculate area.