Mike,
It is a Ward Leonard dimmer. You can see it on the metal dimmer itself in the picture. YES, it was mounted in a wall behind a metal door and it was mounted on a piece of asbestos. Yes, it did get very, very warm and the bulbs never did dim all the way out. I am surprsies that anyone knew about this dimmer. I just figured that it was old and neat looking. Plus I like to keep some of the old devices that I would work with.
