After 22 years in Army, relying on maps compass & bearings, (only from 2000 for gps)
Re Compass/ Maps
The only thing I would say is you have to remember there is True North & Magnetic north all maps should tell you the off set from North to Magnetic it is a few degrees /mills per year left or right to true North.
but you would not be far out really.
never heard rubbish like southern / Northern Hypersphere compasses North is North South is South!
I still use a compass as a aid to map reading & I would suggest a Silva compass The Army teach on these the basics before we go on to prismatic also professional Orienteering use Silva compasses.
May be I am un-trusting but I would always have a map & compass when as a in case so i can plot where I am (when off the bike).
would like to point out Pilots Marine & Air are taught to trust there compasses / instruments.
hope this helps
btw if you go to the OS web site they show you how to map read & use a compass
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