Explanation

Explained by: Javed Qasim (Haidri) Anemometer is a device used for measuring wind speed and direction Barometer is a scientific instrument that is used to measure air pressure in a certain environment Hydrometer is an instrument used for measuring the relative density of liquids based on the concept of buoyancy Hygrometer is an instrument used to measure the amount of water vapor in air, in soil, or in confined spaces