Wristwatch collectors out there?

[markem]

Originally Posted by MurphysLaw

I have calibrated it a few times, not sure if I'm too close to sea level or what the deal is. Sometimes its right on, others it'll show me as 100ft above sea level

Altimeters are affected by atmospheric pressure. You need to recalibrate it any time the barometer moves much, etc. 100 feet is not much for an altimeter to be off. You need to have a solid place of known elevation for calibration within relatively short range of where you want the altimeter to read properly. You don't just set-and-forget an altimeter.