Metal Diving Suit Developed (Aug, 1938)

Isn’t this from Innerspace?

Metal Diving Suit Developed
FITTED with ball bearing knuckle joints, which provide mobility for the wearer, a new all-metal diving suit is said to enable a diver to descend to a depth of 1,200 feet. The suit eliminates the need for air lines, having a specially designed built-in air tank. Hand-operated grappling irons are a feature of the suit.

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3. “Suicide Club” Makes Own Diving Suits (Jun, 1935)
4. Build A Diving Helmet from a Water Heater (Jan, 1932)
5. NAVY SURPLUS DIVING HELMETS (Mar, 1950)