Fantastic detective work. Absolutely brilliant 3DImpact. And to meet Lorne Peterson to verify the authenticity, magnificent!
After some Ebay purchasing and courtesy of a vintage camera collector I have a couple of Minolta Auto-Spot meters, a collection of faulty Arriflex constant speed motor units (a couple missing switches) and a brass drawer knob to machine into a watchmakers screwdriver for the top part.
Here is mine roughly positioned together. I really need a variable speed version motor for the bottom one so I’ll keep looking.
As a Work In Progress costume (with the Rebel Legion Uk) Rebel Fleet Trooper myself, I'm quite looking forward to a having a screen accurate prop to go with it.