WW1: Aviator's oxygen mask in position and ready to use. Note the handwritten caption on the photo. WW1 planes could not safely fly at 10,000 ft, ceiling for deploying oxygen masks, so the development of the device looked at the future.
simply-bitchy: simaniacos: assbutt-in-the-garrison: ivorysorrows: nevver: The Future Tense Brilliant wow. I don’t usually reblog photography but this is meaningful and really hits you. WOOOW Wow woooow wooooow