The four wheels were under the panels, and the axles were attached to the stand. Each wheel was two feet high.
Each had a 1½-foot-deep opening in the center to the circular frame on top. The opening was round, formed like a pedestal, and was two feet ⌞wide⌟. Around the opening there were engravings. But the panels were square, not round.
The wheels were made like chariot wheels. The axles, rims, spokes, and hubs were all cast metal.