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Beautiful NASA switches

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RJSV:
SYSTRON DONNER CORP. used those 'Mil-Spec' type push buttons, with '325' type incandescent indicator lamps. The Safety Systems division (Concord, CA.) sells industrial fire and overheat detection. So the typical system control / display box would have detectors wired in, and a 'press to test' feature would run a low voltage down the wiring, to detector, and back: That way virtually every portion is checked out.
   Used in aircraft, and some (military) heavy vehicles as well.

AlbertL:
These guys make some nice-looking switches of the type used in power-plant control rooms: https://www.electroswitch.com/products/utility-power-switches-relays/manual-standard-instrument-and-control-switches . 

And no power plant would be complete without a bunch of these! https://www.ametekpower.com/products/alarm-management

rdl:
NASA TN D-8301 Apollo Displays and Controls

https://ntrs.nasa.gov/api/citations/19760026143/downloads/19760026143.pdf

I don't see a direct link to the document above, however in the section Apollo Experience Reports there is also:

https://www.hq.nasa.gov/alsj/tnD6722LMDisplayControl.pdf

There's a lot more information at: https://www.hq.nasa.gov/alsj/main.html

If you're a fan of space exploration and Project Apollo, you could easily spend many hours following the links there.

Buzz Aldrin's Ph.D. thesis http://dspace.mit.edu/handle/1721.1/12652
John C. Houbolt's Lunar Orbit Rendezvous Study https://www.hq.nasa.gov/alsj/JCHoubolt1961LunarOrbitRendezvous19780070033.pdf
Putting a flag on the Moon, how hard could it be? https://www.hq.nasa.gov/alsj/alsj-usflag.html


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