poolmouse said:i'm taking a leave of absense from my job (on my fourth week...may take a couple more weeks off). i spoke to garmin today. i've been wanting to buy an edge 305 but was worried that it uses a barometer (as opposed to gps) to determine altitude. garmin explained that the edge 305 calibrates every 15 minutes. all the features i want (including water proofness and robust software) are there...my only question is whether the edge 305 can be forced to calibrate before beginning a ride.
don montalvo
rego park, ny
G'day mate, NO gps from any company is very good on altitude.I won't go into why as you can look that up for yourself. I have been mountain bike touring in the bush for about 15 yrs and would not leave home without my gps. I pick a compass direction and try to follow as straight as i CAN FOR UP TO 500KLM'S. I go over, under, around or througt anything that gets in the way. I go where there are no maps so rely on my bread crum trail on my gps, to find out where I am. I climb mountains and swim rivers and have never had reason to regret buying my gps. Maps I have had blown away, wet and the ink run, ruined by folding, and just plain fading in the sun.I have used a few for toilet paper.I travel alone mostly, am self supporting, and also have an emergency beacon, (called an eprib) in case of serious accerdent, snake bite, or my diabeties go haywire. I carry all tools, spokes to re do wheels, 4 tubes, 2 tyres, 4 glueless puncher kits. I use thornproof tubes with tyre liners. this ain't much to do with gps, just to let what this boy from oz does. have replaced batteries 3 times in 15 yrs. dont let anyoue talk you out of one. when i find interesting things fron the past, i take a reading and come back in my 4x4 and collect. that has just bought me a new road bike. regards Terry [email hidden]