Anyone know what this is? It is a large cube about 5" x 5" x 5". It has a top block that has wires that connect to 4 brass studs that come out the block. Those studs make contact with 2 brass vertical pins. In the bottom of the 2 vertical pins are very tiny mirrors (I mean very tiny). It looks like the vertical pins slide up and down and rotate. There is also a 110V power input to the bottom of the unit. I think this is a magnet? Although I am not sure.
Has anyone seen one of those or know what it is for?
Cheers
XG