This photograph would have been used in the production of one of Siebe Gorman's catalogues.
Another Siebe Gorman chamber. This illustration is on page 117 of the fourth edition of R.H Davis book Deep Diving & Submarine Operations.
Rear photograph of a 'Frogman' wearing the Mark IV Amphibian Self Contained Diving Apparatus
You will see this guy wearing the DSEA in both the catalogues of Siebe Gorman and Davis's book. He is looking particularly uncomfortable in this photo.
Side view of a Siebe Gorman Diver in full standard dress and diving helmet in conjunction with a type of Self Contained Diving Apparatus made by Siebe Gorman & Co.
To the right of the helmet you can see one of the photographers or an employee of Siebe Gorman & Co. adjusting the helmet and backdrop for the photograph.
Siebe Gorman diver wearing what looks like an injection type SCDA or Self Contained Diving Apparatus
Mouthpiece comprises of a single hose with shut off valve. Exhaust valve mounted on the front of the apparatus.
