CompuServe Messages

>> within inches of the true position" has very limited meaning to a >> surveyor That's OK, 'cause I'm not a surveyor <g>. The info came from a USGS publication intended for schoolkids, as I recall. I'm sure that it was intended to give a feel for the type of precision involved, not to be taken as a springboard for professional discussion. What I was actually interested in was the GPS methods being used, and how they compared to the kind people install on their boats, RVs, long-haul trucks, etc. Al