[OSM-talk] Azimuth measurement

[SomeoneElse]

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.

So perhaps "facing north/east/south/west" is good enough for a bench?

Cheers,

Andy