Quote Originally Posted by drmorris View Post
I'm interested too. Do you have to spend a fortune on a Suunto to get a reliable altitude for OMM 1:40,000?

What about this Silva Ridge one - battery free -

http://www.outdoorgb.com/p/adc_ridge...dBundle=143194

Would that be detailed enough for use in a MM? Already have a Garmin 305(which can give 'instant' GPS based altitude), but of course not allowed in the OMM, because of the GPS...
I use mine quite a bit (Suunto) and find it very accurate, but when racing in MM etc I don't use the height your at feature as some MM maps don't give heights on contours, I just use the difference. ie what ever height i'm at know the next cp is 4 contours below me so at 15m a contour i need the altimeter to read that much less. that way you also don't need to keep correcting it.