$70 · Variable auto transformer ( Variac ) 20.8A, 0-120V

Ward Leonard Electric variable auto transformer ( similar to General Radio V20 Variac ) adjustable from 0-120Vac at maximum 20.8 Amps. It can easily be modified to produce 0 - 140Vac - takes about 15 min.. A crack in the terminal block has been repaired with epoxy as shown, but it works fine. This is a raw unpackaged unit, but you can put it in your own enclosure. I have included a photo of one I built into an enclosure as an example. (Not for sale).