Re: rebuilding compass
I bought the parts from the factory, Ritchie & Sons. I'd have to look around for the cost. Wait I used paypal. About $160 for two rebuild kits which included the dome, bellows, o-rings, led holder, and two quarts of fluid. I don't have a link for the magic plastic goop.
A guy at work has been rebuilding an old car in the warehouse. He had some which I tried. Hopefully its still there as I need to polish the second compass. If its there I'll post the info.