Generally speaking, can a compass that's calibrated for use in the Northern Hemisphere be used with reasonable accuracy in Australia? A net search has yielded much varied and unhelpful opinion. Although fairly competent in nav (except for that one time), I know nothing about this, because we didn't need to know it, so it wasn't taught. I ask because I'm thinking of buying a Silva 54B, and object mightily to being gouged $250-$300 for a compass that's about 60 quid on Ebay UK. Obviously, I can't go to the Q Store and be told to '**** off, it's a starred item!', so I might as well be told to **** off here instead. Am not keen on GPS, largely because of Murphy's Law, battery replacement, signal strength, potential for damage etc. etc. TIA, Mark.