I have a Cammenga tritium lensatic compass just like the U.S. militaries.It is heavy as all "heck".But I like that because it is "bomb proof" and can take some pretty good licks.It is a dry cell compass which means no air bubbles.The tritium vials are self luminous and can be used at night.It is the kind of thing that could be passed down a generation or two.I think Thseng likes them also.....

BOATMAN
John