Hello, a bit late to the party. Ive made my own Jack compass, but its 3D printed so the feel is a bit off…I for sure want to make a new one out of wood soon. My gripe with mine is that one, the dome is too tall, and two, I'm not completely sure…but im fairly certain the whole compass is a bit too large. If you dont mind, what are the dimensions of your compass? Thank you.