I searched for one on Google. The one I found came from a Marine (boats) supplier. Its round, with a rounded base that housed the motor. At least it’s shiny aluminum. It’s obsolete, which is how I saved money, but a search for “electrically operated table pedestal” should find some examples. You will feel your wallet cringe at some of the prices....especially the stainless steel ones....
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.