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NOAA Photo Library Image - ship4353

Plate 2. Magnifying glass devised by Fridtjof Nansen for reading thermometer scales. The thermometer is placed such that the two notches designated "c" are on the thermometer; the thermometer is adjusted such that the top of the mercury column is located at point "d"; and the reading glass is focused for reading the thermometer by turning the interior tube "a" within tube "b".

Image ID: ship4353, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Credit: Oceanographic Museum of Monaco

Category: Oceanography/

High Resolution Photo Available

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Last Updated:
November 10, 2017