Amazing site you have here! I'm trying to find the font that was used in World War II Aircraft navigation instruments. Example is this URL: B-17 RECOGNITION LIGHTS
This was a very common font in World War II and probably was due to some machinery that was used to engrave onto the instruments. If you google "B-17 Instruments" you'll see this all over: Always all uppercase, proportionally spaced, sans-serif. Here is another one from the B-17 Auto-Pilot control B-17AutopilotPicture Any help would be appreciated!
Thanks in advance,