Posted 11/20/2013 22:18 (#3458097 - in reply to #3457683) Subject: Re: Earth's curvature
Cedar Rapids, Iowa
I'm not sure I understand what you're asking. A GPS controlled scraper is going to be using elevation (reported as meters above mean sea level in NMEA), which inherently accounts for the the curvature of the earth. More accurately, the elevation data is based on the ellipsoid.
Earth's curvature
