Humidity
Humidity Sensor, digital and analog to measure air and soil moisture
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Combined Temperature/Humidity Sensor in Shelter
Temperature and humidity sensor protected efficiently by a shelter
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Hygrometer
Specially prepared hairstring element, with direct indication of rel. humidity and electrical transmission
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Electrically Aspirated Psychrometer by Frankenberger
Relative humidity and dew point with highest accuracy
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Psychrometer by August
Measurement of the temperature, relative humidity and the extrem valures of the temperature
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Aspiration Psychrometer by Assmann
Measurement of the relative humidity and the dew point