Two of the three latches for the lid have rotted away, and the liquid for the compass has picked up some floaters. I have no way of testing it, and so I can't verify that it does whatever is supposed to happen when it is plugged in and the knobs are turned.
Still, it's just a really cool thing, and it has a big sturdy box. To give a size reference, the box measures 14" x 14" x 14. And this thing is heavy.
I package as securely as possible, with multiple layers of cardboard and padding. And this compass, with the box, weighs over 55 pounds. As a result, the finished package is quite large and very heavy. I'm afraid that I have no solution for that, and apologize on behalf of the postal services. Please message me for more measurements or photos, or with any questions.
Or if you have any interesting information on this thing. And thank you for looking.