Ahh!!
I actually have a few of those kicking around, but of a different style and operating mechanism, same manufacturer... The ones I have came out of my old highschool and were mounted on massive racks and used to control all the stage lighting.. They were operated with mechanical linkages that ran from the variac to the front of the rack where someone stood and operated the handles...
They also had motor driven variacs up in the loft that controlled the auditorium lights and were operated via a pair of pushbuttons in the projection room.
All that was ripped out in favour of 2
"black boxes" that did the job of that big rack, and was all controlled from a table -top control board that could be plugged in several locations in the autitoriom... Gotta love modern technology eh!!
A.D
