This plane was filled with an infinite number of country-sized circular interlocking gears which were habitable on one or both sides. These great flat wheels were at least 1,000 miles in diameter and had teeth that meshed at right angles, all turning slowly in synchronicity. Each disk had its own gravity that operated in a sphere circumscribing it exactly and pulling normal to the top and bottom surfaces. The void between the gears was filled with air, allowing easy flight. Outside a gravity sphere, objects would feel only very weak attraction to nearby disks