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Figure 40 Picture

Figure 40

Figure 40. Thoulet soluble cartridge messenger for delayed release of instruments. These “soluble weights” were designed to initiate the functioning of an immersed device at a pre-determined time. Thoulet had apparently designed this device for use with sampling nets . He started tests with these in 1893 in Lake Gerardmer and provided samples for Prince Albert I to use at sea.

Photo Category: Oceanography

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18th October 2015
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