There are other compasses that are not liquid filled.For a small compass there is the NATO button compass by Pyser.Tru-Nord is about the diameter of a US quarter and around a third of an inch high.For a full size I recommend the Cammenga military compass.I have this and love/hate it.It is not light by any means but is bomb proof.It is also ugly as sin and is OD green and could easily be lost.

BOATMAN
John