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”.
Photo Category: Oceanography
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Added On | 18th October 2015 |
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