Picked up this cool depression era homemade diving helmet. When I saw it I just had to have it, don't ask me why. Researching it, found that Popular Mechanic's magazine published how to articles for these & evidently a lot were made during the 1930's. No two are exactly alike, which makes it a little more unique. The most well known hard hat diving rig, back then, was the WWII era Navy Mark V, nicknamed the widow maker. I can only imagine what they dubbed these things.
View attachment 776824