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2. Barometer - Wikipedia

   en.wikipedia.org/wiki/Barometer

   Barometer. A barometer is a scientific instrument that is used to measure air pressure in a certain environment. Pressure tendency can forecast short term changes in the weather. Many measurements of air pressure are used within surface weather analysis to help find surface troughs, pressure systems and frontal boundaries.

3. Bar (unit) - Wikipedia

   en.wikipedia.org/wiki/Bar_(unit)

   The bar is a metric unit of pressure defined as 100,000 Pa (100 kPa), though not part of the International System of Units (SI). A pressure of 1 bar is slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar).

4. Atmospheric pressure - Wikipedia

   en.wikipedia.org/wiki/Atmospheric_pressure

   Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth.The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa), which is equivalent to 1,013.25 millibars, [1] 760 mm Hg, 29.9212 inches Hg, or 14.696 psi. [2]

5. Meteorological instrumentation - Wikipedia

   en.wikipedia.org/wiki/Meteorological_instrumentation

   A barometer measures atmospheric pressure, or the pressure exerted by the weight of the Earth's atmosphere above a particular location. An anemometer measures the wind speed and the direction the wind is blowing from at the site where it is mounted.

6. Barograph - Wikipedia

   en.wikipedia.org/wiki/Barograph

   A traditional barograph, without its protective case. A barograph is a barometer that records the barometric pressure over time in graphical form. This instrument is also used to make a continuous recording of atmospheric pressure.

7. List of measuring instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_measuring_instruments

   mercury barometer: Atmospheric pressure micrometer: small distances multimeter: electrical potential, resistance, and current nephoscope: to measure the speed and direction of clouds nephelometer: particle in a liquid odometer: distance travelled ohmmeter: electrical resistance opisometer: lengths of arbitrary curved lines orchidometer ...

8. List of weather instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_weather_instruments

   Barometer for measuring atmospheric pressure; Hygrometer for measuring humidity; Anemometer for measuring wind speed; Pyranometer for measuring solar radiation; Rain gauge for measuring liquid precipitation over a set period of time; Wind sock for measuring general wind speed and wind direction

9. Pascal (unit) - Wikipedia

   en.wikipedia.org/wiki/Pascal_(unit)

   The unit is named after Blaise Pascal, noted for his contributions to hydrodynamics and hydrostatics, and experiments with a barometer.The name pascal was adopted for the SI unit newton per square metre (N/m 2) by the 14th General Conference on Weights and Measures in 1971.