Figure 15. Negretti and Zambra thermometers, 1912 models. In 1912 a new modelof reversing thermometer was introduced which had a number of improvements thatincreased the sensitivity and accuracy of measurements including a scale that was graduated
4/5/2019 9:18:46 AM
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments