Figure 14 (cont). Negretti and Zambra thermometers, older models. These were reversing thermometers completely protected by an outer glass casing. This type of thermometer was manufactured from 1878 until 1912. The scales were graduated in degrees and half-degree centigrade. Temperature range of: 99 0034, -26 to 34C; 99 0044, -13 to 35C; 99 0047, -18 to 33C; 99 0052, -7 to 33C.
Photo Category: Oceanography - Historical instruments
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Added On | 18th October 2015 |
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