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"\n\nThe first diving helmet was made of copper and allowed divers to breathe air from a tank on the surface .\n\nA dive helmet typically weighs about 32 lbs on topside, but becomes neutrally buoyant underwater .\n\nCharles and John Deane developed the world&#39;s first diving helmet.\n\nWonderful Addition to a United States Navy\n18 inches high, 15 inch deep\nThis is made by the premium quality and its also perfect idea for decor your home with the help of antique diving helmet .\nTheir inner material is antique .\nIts dimensions is 17.99 x 7.99 x 7.99 inches .\n"
<https://windowprops.com/blogs/news/10-fascinating-facts-about-antique-diving-helmets>