This is a depth gauge that would have been equipped on a T-class (Triton) sumarine.
The Royal Navy’s T class (or Triton class) of diesel-electric submarines was designed in the 1930s to replace the O, P and R classes. Fifty-three members of the class were built just before and during the Second World War, where they played a major role in the Royal Navy’s submarine operations. Four boats in service with the Royal Netherlands Navy were known as the Zwaardvisch class.
In the decade following the war, the oldest surviving boats were scrapped and the remainder converted to anti-submarine vessels to counter the growing Soviet submarine threat. The Royal Navy disposed of its last operational boat in 1969, although it retained one permanently moored as a static training submarine until 1974. The last surviving boat, serving in the Israel Sea Corp, was scrapped in 1977.
The gauge’s diameter is roughly 350mm (under 14 inches) and measures pressure in lbf/in2.
*Condition*
The depth gauge is in good condition for its age with some minor marks on the surfaces and scratches on the glass. There is some oxidisation on the bottom. Please see pictures for more detail as they form part of our condition report.
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