History: Chester E. Macduffee with his 550 lb. (250 kg.) aluminum deep sea diving suit, 1911 [602x846]

https://i.redd.it/mkunqv1iygyy.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/6c423f/chester_e_macduffee_with_his_550_lb_250_kg/?utm_source=ifttt