Jisho

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Noun
1. hygrometer; hygrograph
Wikipedia definition
2. HygrometerA hygrometer /haɪˈɡrɒmɪtə/ is an instrument used for measuring the moisture content in the environment. Humidity measurement instruments usually rely on measurements of some other quantity such as temperature, pressure, mass or a mechanical or electrical change in a substance as moisture is absorbed. By calibration and calculation, these measured quantities can lead to a measurement of humidity.
Read “Hygrometer” on English Wikipedia
Read “湿度計” on Japanese Wikipedia
Read “Hygrometer” on DBpedia

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