Sudden geeky desire of the day

[luzula]

So, I'm reading a lot of Patrick O'Brian and polar exploration and stuff right now, and they're always using sextants to determine where they are. I got a sudden desire to try it. I asked my housemate the military officer, but they apparently don't have any old sextants lying around at his regiment. Probably because they're army, not navy (although they do have an old apparatus for measuring distance by triangulation).

Uh, has anyone on my flist used a sextant? I am this close to buying one on the Swedish equivalent of eBay.