Figure 38. Stahlberger rheobathometer, invented in 1873 by Emil Stahlberger to
measure currents, measure depth, and collect deep water samples. It was first
used on board the Austrian corvette MINERVA in 1873 in the Gulf of Fiume. The
original device was made by Mathias Skull of Fiume, Austria. Several versions
of this instrument were tested at various depths.
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