Figure 22. Arwidsson bottle invented by the Swede Thorsten Arwidsson in 1879 used by Swedish and Danish investigators. The pencil indicates the placement of of the releasing mechanism. Left: descending. Right: ascending. This type of of bottle was used in 1952 by the Danish light vessel VYL.
Photo Category: Oceanography - Historical instruments
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|Added On||18th October 2015|