Figure 48. Pettersson universal sampling apparatus devised by the SwedishProfessor Otto Pettersson. This instrument would sample plankton, measure thetemperature of the water, measure the strength and direction of the current, and sample the water.
4/4/2019 2:06:38 PM
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments