[OSM-talk] Datums

[Andrew Rowbottom]

Can anyone tell me what Datum I should be using on my GPS? I can't
seem to find anything on this in the Wiki.
I'm assuming I should be using WGS84 since that's reasonable for the
whole world, but obviously in the UK (where I am) my datum would
normally be OSGB(36?). The difference is between 70 and 100 meters
which is significant compared to current GPS accuracy.

see http://en.wikipedia.org/wiki/British_national_grid_reference_system#Datum_shift_between_OSGB_36_and_WGS_84

Andrew Rowbottom