Keywords: First porpoise.jpg An example of the world's first commercially available single hose SCUBA unit designed and manufactured by Ted Eldred in 1952 Original was Photo taken in 2003 of one of the first Porpoise single hose Scuba units released in 1052 en wikipedia 2006-10-26 Eldtrain wikipedia en Eldtrain Original upload log page en wikipedia First_Porpoise jpg 2006-10-26 06 31 Eldtrain 288×432× 36016 bytes <nowiki>Photo taken in 2003 of one of the first Porpoise single hose Scuba units released in 1052 </nowiki> Scuba equipment Vintage scuba |