Morse Vintage United States Navy Mark V Boston Diver Divers Diving Helmet. This product sheet is originally written in English. Please find below an automatic translation in French. Hand dye antique process color used may differ a little due to manual engraving process. Weight: 6 kg. Volume weight: 14 kg. Top head measurements: 16″ x 12.5″ x 17 / 40cm x 32cm x 42cm. All measurements are approximate. THANK YOU FOR SHOPPING. Volume weight: 14 kg. Top head measurements: 16″ x 12.5″ x 17 / 40cm x 32cm x 42cm. All measurements are approximate THANK YOU FOR SHOPPING.