: Most GPSes do show altitude (on my Garmin Nuvi 350, the satellite
: reception screen shows coordinates and elevation), but beware --
: because of the location of the satellites in the sky, altitude is much
: less accurate than longitude and latitude. I'd say it's +/- 100 feet
: typically, based on comparisons with roadside elevation signs and a
: barometric altimeter.
The difference between 'altitude and 'elevation' - is it just semantics or
is there a difference? I've always taken 'elevation' to mean distance above
the ground, and 'altitude' to be distance above sea level. I believe pilots
assume the same as I - if you were flying at 1000' 'altitude' near 1500'
hills, you'd be in trouble.