Originally Posted by steveh2
I don't know about the units discussed at the start of the thread, but the eTrex vista gives a barometric altitude reading, with a calibration feature that, eventually, brings the barometric reading in line with the GPS satellite-calculated elevation.
The GPSMap 60CS combines both barametric with GPS satellite to improve it's elevation readings. I'm not all that concerned with the pinpoint accuracy of my elevation readings. I'm very comfortable with the degree of error in the units, weakest signal I have seen is within 40 ft accuracy.
The think that's bustin my nut is the unit has two means of recording, a data file called track and a so called trip recorder.. real time display of your elevation gain/descent. Why the heck can't the two of them match up, and if not is one the measurements more accurate than the other.