sensitive altimeter
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sensitive altimeter — A form of pneumatic altimeter that is more accurate than a simple altimeter. It has an adjustable barometric scale by which the instrument can be adjusted to the existing barometric pressure. The altimeter pointer makes a complete revolution for… … Aviation dictionary
Altimeter — An altimeter 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 underwater. Aircraft Instrumentation… … Wikipedia
altimeter — /al tim i teuhr, al teuh mee teuhr/, n. 1. a sensitive aneroid barometer that is graduated and calibrated, used chiefly in aircraft for finding distance above sea level, terrain, or some other reference point by a comparison of air pressures. 2.… … Universalium
altimeter — /ˈæltəmitə / (say altuhmeetuh) noun 1. a sensitive aneroid barometer calibrated and graduated to measure altitudes by the decrease of atmospheric pressure with height, used in aircraft for finding distance above sea level, terrain, or some other… …
servoaltimeter/servo-assisted altimeter — A type of pneumatic altimeter in which an aneroid mechanism moves an electrical pickup, amplifying the signal to drive a servomotor. The servomotor, in turn, moves the drums and the pointers. This type of altimeter is more accurate than the… … Aviation dictionary
three-pointer altimeter — An altimeter in which there are three pointers. The shortest one indicates the height in ten thousands of feet or meters, the middle one in thousands, and the longest in hundreds, down to tens or twenties of feet. See sensitive altimeter … Aviation dictionary
barometric scale — A scale on the dial of a sensitive altimeter. A pilot sets the barometric pressure level and uses it to measure the altitude shown on the altimeter. When existing pressure (QNH) is set, the altimeter reads the indicated altitude, and when the… … Aviation dictionary
Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… … Wikipedia
Jason 1 — [ cite web | url = http://topex www.jpl.nasa.gov/mission/jason 1.html | title = Ocean Surface Topography from Space | publisher = NASA/JPL] is a satellite oceanography mission to monitor global ocean circulation, study the ties between the ocean… … Wikipedia
Hang gliding — Hang glider launching from Mount Tamalpais … Wikipedia
Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass … Wikipedia
