An altimeter or an altitude meter is an instrument used to measure the altitude of an object above a fixed level. The measurement of altitude is called altimetry, which is related to the term bathymetry, the measurement of depth under water.
The aneroid altimeter is calibrated to show the pressure directly as an altitude above mean sea level, in accordance with a mathematical model defined by the International Standard Atmosphere (ISA). The greater the altitude the lower the pressure. When a barometer is supplied with a nonlinear calibration so as to indicate altitude, the instrument is called a pressure altimeter or barometric altimeter. • ALTIMETER (noun). The noun ALTIMETER has 1 sense: 1. an instrument that measures the height above ground; used in navigation. Familiarity information: ALTIMETER used as a noun is very rare. Meronyms (parts of altimeter): aneroid; aneroid barometer (a barometer that measures pressure without using fluids). Hyponyms (each of the following is a kind of altimeter): hypsometer (an altimeter that uses the boiling point of water to determine land elevation). Noun. 1. altimeter-an instrument that measures the height above ground; used in navigation. aneroid, aneroid barometer-a barometer that measures pressure without using fluids. hypsometer-an altimeter that uses the boiling point of water to determine land elevation. measuring device, measuring instrument, measuring system-instrument that shows the extent or amount or quantity or degree of something. Full Definition of ALTIMETER. : an instrument for measuring altitude; especially: an aneroid barometer designed to register changes in atmospheric pressure accompanying changes in altitude. — al·tim·e·try \al-ˈti-mə-trē\ noun. See altimeter defined for English-language learners. See altimeter defined for kids.  Altimeter 2992 means that the air pressure is 29.92 in. HG. 29.92 in. HG. With this information, you would calibrate your altimeter to 29.92. The Altimeter as used in aircraft also has a small thumb wheel or turntable knob that allows you to set the air pressure to the air pressure of the ground. This makes the scale more accurate, and negates any changes in air pressure. 2 people found this useful. QNH differs from QFE, which refers to the altimeter setting that will cause the altimeter to read the height above a specific aerodrome or ground level, and therefore read zero on landing. An airfield QNH will cause the altimeter to show airfield altitude, that is, the altitude of the centre point of the main runway above sea level on landing, irrespective of the temperature. An instrument that measures the height above ground; used in navigation. Classified under: Nouns denoting man-made objects. Hypernyms (altimeter is a kind of...): measuring device; measuring instrument; measuring system (instrument that shows the extent or amount or quantity or degree of something). Meronyms (parts of altimeter): aneroid; aneroid barometer (a barometer that measures pressure without using fluids). Hyponyms (each of the following is a kind of altimeter): hypsometer (an altimeter that uses the boiling point of water to determine land elevation). An altimeter or an altitude meter is an instrument used to measure the altitude of an object above a fixed level. The measurement of altitude is called altimetry, which is related to the term bathymetry, the measurement of depth under water. The greater the altitude the lower the pressure. When a barometer is supplied with a nonlinear calibration so as to indicate altitude, the instrument is called a pressure altimeter or barometric altimeter. On a sensitive altimeter, the sea-level reference pressure can be adjusted with a setting knob. The reference pressure, in inches of mercury in Canada and the US, and hectopascals (previously millibars) elsewhere, is displayed in the small Kollsman window, on the face of the aircraft altimeter. The greater the altitude the lower the pressure. When a barometer is supplied with a nonlinear calibration so as to indicate altitude, the instrument is called a pressure altimeter or barometric Barometer is the device used for measuring atmospheric pressure.Whereas,altimeter is the instrument that measures the altitude of the land surface or of any object, such as an … airplane. The principals of design for the Barometer and Altimeter are the same. A sealed capsule expands and contracts with changes in air press … ure, this movement is then changed to the movement of a dial to get a scaled reading.
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what does altimeter mean