[pct-l] how an altimeter works, take 2

[Postholer]

> The question remains though, how does the watch supposedly determine
> which pressure change is due to elevation and which pressure change is
> due to changes in weather?

It doesn't. It senses a change in barometer regardless if caused by 
barometric or altitude change. The natural change in barometric pressure is 
what causes your altimeter to become inaccurate, that is why you need to 
reset the elevation against a known altitude periodically.

-postholer

------------------------------------
Trails : http://Postholer.Com
Journals : http://Postholer.Com/journal
Mobile : http://Postholer.Com/mobi