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Watching the weather
Watching the weather

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image titleInside a Stevenson screen
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captionInside the Radcliffe Observatory's Stevenson screen are four thermometers. The dry bulb thermometer (vertical left) measures the still air temperature. The wet bulb thermometer (vertical right) has a fabric sleeve surrounding the bulb, connected by a wick to a reservoir of distilled water. The two horizontal thermometers register the maximum (upper) and minimum (lower) temperatures. See Wet and dry bulb thermometers, MI006, maximum and minimum thermometers, MI007.
codeMI005
SectionMeteorological instruments
SubsectionSurface-based instruments
image credit© The Open University
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