Abstract
WHILE a barometer of the Fortin pattern is generally regarded as a better laboratory instrument than one of the Kew pattern, many observers prefer the latter, owing to the difficulty found in setting the mercury accurately to the pointer in the cistern of the Fortin barometer. If the illumination is good and the mercury clean, this setting provides no difficulty; but barometers are often of necessity set up in positions of poor illumination and the mercury surface becomes dull after a few years of use, so that accurate setting of the mercury to the pointer is rendered difficult.
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The Fortin Barometer. Nature 128, 732 (1931). https://doi.org/10.1038/128732a0
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DOI: https://doi.org/10.1038/128732a0