I adore mechanical shit like this. For the longest time I’ve wanted to find attitude indicator and somehow shove it in to my cars dash, just because they’re so neat.
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For those wanting some info:
This is the Korry 433, a luminated 4-pole double-throw switch used by Boeing.
Pins 1-12 are the switching circuits, the four switches connected to pins 1-3, 4-6, 7-9 and 10-12. Pins 3, 6, 9 and 12 are the inputs, pins 1, 4, 7 and 10 are the normally-closed outputs, and pins 2, 5, 8 and 11 are the normally-open outputs. Pins 13-18 are two lamp circuits to separately illuminate the upper and lower sections. The two lamp circuits, A and B, are connected to pins 13-15 and 16-18 respectively. Depending on the specific model, pin 14 may not be connected, but if it is, pins 14-15 are tied for redundancy and lamp A will be polarised. Lamp B is always polarised, with pins 16-17 again being tied for redundancy.
I found a YouTube link in your post. Here are links to the same video on alternative frontends that protect your privacy: