Re: [fbw.sw] Altimeter Watches
most altitude devices measure barometric pressure, which can change. skydive enough and you'll experience a day where you must reset your altimeter to zero.
if it takes a few hours to hike up to the exit point, will a barometric device remain accurate? if it is high enough to take that long, will it matter?
remember, these devices must only measure the local pressure. to find out about a ledge below a cliff edge, you must get the device to it.
range finders use lasers, tend to be more accurate, and can measure objects without physically reaching them.
every device has limitations. the key is to NOT get device dependent (aside from a parachute). people have posted before that they love their altitude watches. like so much else, know the limitations and have fun.