Antique Compass5.5 X 5.5 X 2.1cm I'm afraid I don't really know anything about this little compass. Hopefully the photographs show you all you need to know. It could do with a little clean, the brass (I'm guessing) is a little tarnished. Someone scratched their initials onto the inside of the case and there appear to be two sets of numbers, prices perhaps also on the inside of the lid. There is a small button, on the bottom left of the dial, you press it and it lifts the compass needle. It's a sort of re-set button. A lovely little piece.