A standard diving dress consists of a metallic (copper, brass or bronze) diving helmet, an airline or…
A front view of a diving helmet. A, Helmet; B, Breastplate; F, Emergency cock; G, Glasses in frame;…
A side view of a diving helmet. K, Segmental neck rings; D, Air conduits; Telephone receiver; N, transmitter;…
Top view of diving helmet. C, Air inlet valve; E, Regulating outlet valve; G, Glasses in frames; L,…