As you can see, it's quite old. I did some basic cleaning, but the rust etc. couldn't be removed. The upper rotating sphere and the gears on the left and right move smoothly. I think there are no problems with the operation. Size: Upper sphere: Approximately 20cm in diameter Left and right water wheels: Approximately 64cm in diameter Shipping is planned to be in two parts, bundled together. It can be assembled by tightening one screw. Thank you very much. Thank you for viewing.