[OSM-talk] Azimuth measurement

[Richard Z.]

On Tue, Apr 08, 2014 at 02:44:46PM +0100, SomeoneElse wrote:
> Martin Koppenhoefer wrote:
> >on iPhones you can change this in settings (geographic vs magnetic north) not sure for other devices but my guess is there will be settings as well...
> 
> Unless you're in northern Canada I really wouldn't worry about the
> difference between geographic and magnetic north.
> 
> Just for a laugh I've looked at the "compass" results from a couple
> of phones (an iPhone and a Blackberry Q10) and an actual compass
> (piece of metal on a stick in a box - remember them?).  Obviously
> indoors it's really not a fair test, but if I point the phones north
> (which the actual compass gets correct) the phones read 268 and 210
> rather than 0.

you can easily calibrate the compass of smartphones in every location. 
It does help quite a little bit.

Some apps also have some kind of correction for geographic vs magnetic 
north.


Richard