The Backplate, a plate, usually made out of stainless steel, occasionally aluminium or carbon fibre composite, and that is held from the diver's back again because of the harness, and also to which the diver's Principal cylinder or cylinders are connected. Aracın teknik olarak 200 metreye kadar basınca dayanma özelliği https://setiathome.berkeley.edu/show_user.php?userid=12572417