If you just want a small compass to know where north is, to 'get your bearings' (pun intended), orient a map, etc, check out the Silva Guide Compass - it's small, very lightweight, it floats, it has a mirror. Besides signaling potential, the mirror is great if you wear contacts like me. It works fine in the southern hemisphere too, even tho' not compensated for it, if you travel. It doesn't adjust for declination. Suunto makes a small base plate style declination adjustable compass. The Rangers and comparable Suuntos, Bruntons are industrial and orienteering standards, but I have always felt too big for just having a compass around, unless you are serious into triangulating, orienteering, plotting routes, etc
