USN water desalination kit
Dimensions:W: 10cm (3.9")H: 13cm (5.1")D: 4cm (1.6")
By The Permutit Co. New York. Approximately 13 x 10 x 4cm. Grey metal tin that contained chemicals and a bag for use in making drinking water from sea water. These were issued to the US Navy and included in various survival kits and dinghy packs etc. It is in very good condition but empty. Stock code S22390.