Figure 52. Krummel and Ruppin bottle devised by Professor Otto Krummel in 1907 and modified by Ernst Ruppin in 1912. Panel A - 3-liter bottle descending. Panel B. 3-liter model ascending. Panel C. 1-liter bottle descending. Panel D. 1-liter bottle ascending. This type of bottle was used by the POSEIDON about 1912.
Photo Category: Oceanography - Historical instruments