An anemometer. An anemometer is a device for measuring wind speed. This type of hemispherical cup anemometer was invented in 1846 by John Thomas Romney Robinson.

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Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
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Keywords: anemometer, color, cup, device, enhance, enhancement, equipment, hemispherical, historic, historical, history, illustration, measure, meteorological, meteorology, robinson, speed, velocity, wind