pl23_ship4008.jpg
![Figure 7 ship4008.jpg Figure 7](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4008.jpg)
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https://www.noaa.gov/media/digital-library-photo/pl23ship4008jpgDescription
Figure 7. E. von Petersen's photometer. Left: device before opening. Middle:device during exposure. Right: device after closing. This device was inventedin 1886 by Eugen von Petersen, an engineer at the Naples zoological station. The design follows the specifications of Carl Chun. The first test of this instrument was by Carl Chun off Capri in 250 meters water depth.
Credit
Oceanographic Museum of Monaco
Photographer
P. Roggero
Collection
Voyage to Inner Space
History of Oceanography Collection
The Early Instruments - Collections of the Oceanographic Museum at Monaco
Photometers
Keywords
Oceanography
Historical instruments