antik.it/Antique-measuring-instruments/61056-Antique-anemometer/
1533912209Code 61056 Antique anemometerBrass and aluminum anemometer signed R. FUESS Berlin-Stegliz Nr 2751, complete with original box made of black painted wood with brass hinges and closure and leather handle. The instrument was made around the end of the nineteenth century. Very good condition, fully functional. Measures box 11x9 cm h 19.5.
Rudolf Fuess founded his workshop in Berlin in 1865. He started making anemometers in 1875 and in 1877 they took over the firm Greiner & Geissler, making thermometers and barometers. In 1891 they moved to the Steglitz district of Berlin. Paul, son of Rudolf, took over the firm in 1913, and Rudolf died in 1917. The company prospered during WWI and WWII, but then its facilities were destroyed during the war. They closed their business in 1976.
The anemometer or air flow meter is an instrument used to detect and measure the velocity of an air mass. The wind speed is calculated based on the number of revolutions made in a time determined by a pivoted wheel: from the number of revolutions per unit of time it is possible to know the wind speed. The first type of anemometer was described by Leon Battista Alberti in 1450 and then resumed by Leonardo da Vinci. Anemometers equipped with mobile propellers probably derive from windmills; this idea, for example, was exploited by Robert Hooke from about 1670, one of the greatest scientists of the seventeenth century and one of the key figures of the scientific revolution. In November 1662 he was employed by the Royal Society as a curator of experiments, a new professional figure created for him, which made Hooke the first paid scientist for the sole purpose of conducting research.
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Antique measuring instruments
Code 61056 Antique anemometer
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