Lincoln Idealarc DC-400 MIG welders.
formatting link
The table rotates around the middle.
The table clearly is a welding table. It has a welding cable
connection on the bottom that swivels. (and also came with some length of
3/0 welding cables)
But what does it do exactly, eludes me. It is made by Automated
Concepts of Omaha, NE, that fell victim to corporate carnage.
i