OK
@Van I am curious about what those 24 rotary switches do?
Now to digress, in the mid-70s I got the super deluxe
stagehand tour of the Palace Theater in Albany, NY. The place was still had nearly all of the original 1931 equipment in place. The
dimmer board was amazing. It was an early remote
system with the dimmers under the
stage and the control board was on the back side of the
proscenium stage right. It had linear sliders for the dimmers and with some of the dimmers there was a rotary
switch for color changers on the spotlights.
I don't remember if they were Kliegl but the spots were like this:
View attachment 14834
I finally found a photo of the light board:
View attachment 14835