<Li> Barograph--an aneroid barometer that records the barometric pressure over time and produces a paper or foil chart called a barogram </Li> <Li> Barometer--an instrument used to measure atmospheric pressure using either water, air, or mercury; useful for forecasting short term changes in the weather </Li> <Ul> <Li> Ceiling balloon--a balloon, with a known ascent rate, used to measure the height of the base of clouds during daylight </Li> <Li> Ceiling projector--a device that is used, in conjunction with an alidade, to measure the height of the base of clouds </Li> <Li> Ceilometer--a device that uses a laser or other light source to measure the height of the base of clouds . </Li> <Li> Dark adaptor goggles--clear, red - tinted plastic goggles used either for adapting the eyes to dark prior to night observation or to help identify clouds during bright sunshine or glare from snow </Li> <Li> Disdrometer--an instrument used to measure the drop size, distribution, and velocity of falling hydrometeors </Li> <Li> Field mill--an instrument used to measure the strength of electric fields in the atmosphere near thunderstorm clouds </Li> <Li> Hygrometer--an instrument used to measure humidity </Li> <Li> Ice Accretion Indicator--an L - shaped piece of aluminum 15 inches (38 cm) long by 2 inches (5 cm) wide used to indicate the formation of ice, frost, or the presence of freezing rain or freezing drizzle </Li> <Li> Lidar (LIght raDAR)--an optical remote sensing technology used in atmospheric physics (among other fields) that measures the properties of scattered light to find information about a distant target </Li> <Li> Lightning detector--a device, either ground - based, mobile, or space - based, that detects lightning produced by thunderstorms </Li> <Li> Nephelometer--an instrument used to measure suspended particulates in a liquid or gas colloid . Gas - phase nephelometers are used to provide information on atmospheric visibility and albedo </Li> <Li> Nephoscope--an instrument for measuring the altitude, direction, and velocity of clouds </Li> <Li> Pyranometer--A type of actinometer found in many meteorological stations used to measure broadband solar irradiance </Li> <Li> Radar--see Weather radar </Li> <Li> Radiosonde--an instrument used in weather balloons that measures various atmospheric parameters and transmits them to a fixed receiver </Li> <Li> Rain gauge--an instrument that gathers and measures the amount of liquid precipitation over a set period of time </Li> <Li> Snow gauge--an instrument that gathers and measures the amount of solid precipitation over a set period of time </Li> <Li> SODAR (SOnic Detection And Ranging)--an instrument that measures the scattering of sound waves by atmospheric turbulence </Li> <Li> Solarimeter--a pyranometer, an instrument used to measure combined direct and diffuse solar radiation </Li> <Li> Sounding rocket--an instrument - carrying sub-orbital rocket designed to take measurements and perform scientific experiments </Li> <Li> Stevenson screen--part of a standard weather station, it shields instruments from precipitation and direct heat radiation while still allowing air to circulate freely </Li> <Li> Sunshine recorders--devices used to indicate the amount of sunshine at a given location </Li> <Li> Thermograph--a chart recorder that measures and records both temperature and humidity </Li> <Li> Thermometer--a device that measures temperature or temperature gradient </Li> <Li> Weather balloon--a high - altitude balloon that carries instruments aloft and uses a radiosonde to send back information on atmospheric pressure, temperature, and humidity </Li> <Li> Weather radar--a type of radar used to locate precipitation, calculate its motion, estimate its type (rain, snow, hail, etc .) and forecast its future position and intensity </Li> <Li> Weather vane--a movable device attached to an elevated object such as a roof that shows the direction of the wind </Li> <Li> Windsock--a conical textile tube designed to indicate wind direction and relative wind speed </Li> <Li> Wind profiler--equipment that uses radar or SODAR to detect wind speed and direction at various elevations </Li> </Ul> <Li> Ceiling balloon--a balloon, with a known ascent rate, used to measure the height of the base of clouds during daylight </Li>

What is used in measuring the direction of the wind