Quote:
Originally Posted by joepole
No way, consumer grade GPS units are incredibly accurate, especially now that they don't have to worry about Selective Availability (thanks, Bill Clinton!).
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I thought they operated over averages. Like knowing the location at two points and knowing the time and distance between those points. I just didn't realize it was reponsive like a speedometer. My GPS unit is pretty old and the elevation readings are particularly useless.