An instrument used to determine the altitude of an object with respect to a fixed level The type normally used by meteorologists measures the altitude with respect to sea level pressure
A function that provides altitude by responding to changes in barometric pressure, commonly found in pilot watches Note that inside a pressurized airplane cabin, the altimeter will register as if on land
an instrument that measures elevation by using barometric (air) pressure Alpine Zone: the area consisting of all the land above tree line The alpine zone is best defined by its plant life Conifers such as spruce and balsam grow as Krumholz near the tree line, giving way to tundra-type lichens, moss, and shrubs above
An instrument which determines the altitude of an object with respect to a fixed level There are two general types of altimeters: (a) the pressure altimeter, which gives an approximate measure of altitude from a pressure measurement and an assumed standard temperature distribution; and (b) the radio altimeter, which deduces altitude by electronic techniques
An active instrument (see active system) used to measure the altitude of an object above a fixed level For example, a laser altimeter can measure height from a spacecraft to an ice-sheet That measurement, coupled with radial orbit knowledge, will enable determination of the topography
Instrument for measuring altitudes or elevations with respect to a reference level, usually mean sea level The most common type is an aneroid barometer A radar altimeter determines the height of an aircraft above the terrain by measuring the time required for an electromagnetic pulse to travel from aircraft to the ground and back
Looks like a clock face with a single hand It shows your height above the ground, in thousand foot increments Audible altimeters beep when you fall through a preset altitude These are only a backup for a visual altimeter since if they don't work they don't tell you that they haven't worked, or if you don't hear them they won't remind you Audible alti's are often used by freefall camera people and freestylists since they cannot look at their visual alti's as often as they'd like
an instrument that measures altimetry Two basic types in use: aneroid altimeters measure air pressure; radar or laser altimeters time returning microwaves or light
A device that measures height above the surface (altitude); for skydivers, typically above the intended skydiving landing area (see also AUDIBLE ALTIMETER)
An instrument that measures elevation by using barometric (air) pressure Azimuth: same as bearing Refers to the degree of bearing from your current position to a landmark or destination Reversing the bearing would be known as a back azimuth or back bearing Azimuth Ring: See Housing
A device that measures altitude above the surface of a planet or moon Spacecraft altimeters work by timing the round trip of radio signals bounced off the surface
An altimeter is an instrument in an aircraft that shows the height of the aircraft above the ground. an instrument in an aircraft that tells you how high you are (altus ( ALTITUDE) + -meter). Instrument that measures the altitude of the land surface or of any object, such as an airplane. The mechanical pressure altimeter measures atmospheric pressure relative to sea level through a series of bellows, gears, and springs, which move pointers on a dial. Radio altimeters measure the distance of an aircraft above the ground rather than above sea level by indicating the time a pulse of radio energy takes to travel from the aircraft to the ground and back; they are used in automatic navigation and blind-landing systems