Originally Posted by
njkayaker
No, the amount of error in GPS measurements of elevation is too large for gain. It's poor for elevation gain.
The drift is slower than the changes being measured for elevation gain. Anyway, what is the magnitude of the drift?
And issues outside use on a bicycle are something else (not really relevant to what's being discussed).
Sorry, we have our wires crossed, and it's all on me. My original comment was meant to be about measuring elevation, not elevation gain. But, I typed elevation changes, which makes it incorrect. Pressure transducers are definitely better at measuring elevation changes in almost every situation.