Linked stainless armatures rotating around a circular axis.
Base cast in stainless steel at the Walla Walla Foundry.
Spins in ultralight winds but overbuilt to withstand strong.
Replaceable stainless bearings
Nearly silent operation
Recently appeared in the 89th Academy Awards during the "best original song award".
22'h x 11'w x 8'd 6.7m h x 3.35m w x 2.4m d, 1000lbs, 454kg.