[talk-au] Overland Track added

[Liz]

On Sun, 21 Feb 2010, Steve Bennett wrote:
> Then again, I didn't calibrate the altimeter, so they wouldn't be much use.
> 
At walking speed should be reasonably accurate unless very heavy cloud.
It calibrates itself against the GPS calculated height, so at the speed a man 
with a pack climbs a mountain, should be close.
At the speed at which a cyclist descends, accuracy poor.