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An instrument that measures and indicates temperature, typically using a mercury or alcohol-filled glass tube in which the liquid expands or contracts with temperature changes.

A device used to measure atmospheric pressure that can forecast short term changes in the weather, such as a mercury barometer or an aneroid barometer.

An instrument designed to measure the moisture content in the atmosphere or humidity, often using wet and dry bulb thermometers.

A device that uses a laser or other light source to determine the height of a cloud ceiling or cloud base.

A type of precipitation gauge designed to measure the amount of snowfall, which often collects snow and melts it to determine the equivalent water content.

Also known as a weather vane, it is a tool for measuring wind direction and is often combined with an anemometer.

An instrument that consists of two thermometers, one wet-bulb and one dry-bulb, that is swung through the air to measure relative humidity based on evaporation from the wet bulb.

A type of actinometer used to measure solar irradiance on a planar surface and it is typically used to determine the amount of sunlight that is available for solar power or agricultural purposes.

A weather tool that measures the speed of wind, and commonly uses cups or vanes that spin in the wind to determine velocity.