We built this table for NASA’s Langley Research Center in 2010. It’s an unusual design – most scissoring tables have the arms rotate about a point within the perimeter of the table, like a hinge. (Like this or this.) In the NASA table, the pivot point is out in space, nearly 8 feet from the end of the table. So the two arms aren’t actually attached to the base. Instead, we mounted wheels in each pedestal set in such a way that the arms rotate in the proper radius when pushed. A strange design, but that’s what NASA asked for. And surprisingly, it works really well. The arms can be moved with an easy push at one end.