Heavy brass Dräger 'Taucherautomat' Model D 6000. Developed in the early 1940's as a safety device for divers. Once the flow is set it will be the same at any depth. This D 6000 is sold for display purposes only, it does not work but is a great addition to any collection of historical diving equipment. Price €250 plus shipping
Draeger D 6000 'Taucherautomat'