BBC website 2 Nov 2011 said:
Two diving chambers which helped develop the science of deep sea diving have been saved from the scrapheap by a Hampshire museum. The pair - named "100m" and "690m" - were used by the Royal Navy to test the limits of the human body deep underwater during and after World War II. They have been positioned outside Gosport's recently-opened Diving Museum
An audio slide show describing some of the exhibits is available on the BBC website here.