Temperature Alarm

Temperature Alarm

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The patent tag reads “Fournier & Lemaire / Electro-Magnetic / Temperature Alarm / Patented May 4th / 1869.” The inscription on the instrument reads “THERMO...” Fournier was a professor at the Sorbonne in Paris, an authority on thermometric design, and a founder of the Société des Appareils Fournier.
Ref: J. B. N. Fournier and C. A. Lemaire, “Improvement in Electro-Magnetic Temperature Alarms,” U.S. Patent 89,757 (May 4, 1869).
Currently not on view
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overall: 14 1/16 in x 5 3/4 in x 1 1/2 in; 35.71875 cm x 14.605 cm x 3.81 cm
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Medicine and Science: Physical Sciences
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National Museum of American History
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