hygrometer
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Hygrometer
रु 700.00A hygrometer is an instrument used to measure the amount of water vapor in air, in soil, or in confined spaces. Humidity measurement instruments usually rely on measurements of some other quantities such as temperature, pressure, mass, a mechanical or electrical change in a substance as moisture is absorbed. It is used in hydroponic greenhouses to measure the amount of water vapor in air, measuring of air temperature.