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Figure 19 Picture

Figure 19

Figure 19. Color measuring tube of Julien Thoulet, designed about 1903 to facilitate the use of Forel’s color scale. It was only a little more practical than the original form.

Photo Category: Oceanography - Historical instruments

Author: P. Roggero/Oceanographic Museum of Monaco/ NOAA

License: Public Domain Mark 1.0 (Public domain)
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1239 x 1280 177.12 KB
1790 x 1850 418.21 KB
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Added On
18th October 2015
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