SOUND-WAVE SYSTEM Wet Finder dispositivo di navigazione / underwater navigation device SOUND-WAVE SYSTEM Wet Finder 1979
SPIRO SUB tabella di decompressione con cursore / decompression table with cursor SPIRO SUB cursor system 1969
SPIROTECHNIQUE Spirodag coltello multiuso / multipurpose knife SPIROTECHNIQUE Spirodag multipurpose 1964