altimeters
Height-measuring instruments
Altimeters are instruments that measure altitude—the height above a reference point, usually sea level or the ground.
Aircraft rely on altimeters to maintain safe flying heights: The pilot checked the altimeter before beginning descent.
Barometric altimeters calculate altitude from air pressure; radar altimeters bounce signals off the ground.
Hikers and climbers use portable altimeters to track elevation gain.
Pilot's control compartment
- pilotOne who steers aircraft
- flightAerial journey by aircraft
- aircraftAirborne transportation vehicle
- barometricOf air pressure measurement
pressure · ceiling · climb · descent · airspeed · heading · instrument panel · avionics
Input-detecting device
- barometerInstrument gauging atmospheric pressure
- GPSSatellite-based location technology
- digitalOf discrete data
- analogComparable equivalent
precision · calibration · measurement · transducer · smartphone · wearable · watch · Garmin
Peak or diplomatic gathering
- elevationHeight above reference point
- base campExpedition's operational hub
- ascentUpward movement
- peakUtmost height attained
climbing · trekking · Himalaya · acclimatization · expedition · porter · sherpa · mountain
Unimpeded downward motion
- jumpPropel oneself airborne
- parachuteDrag-creating descent device
- deploymentOrganized distribution of resources
- canopyOverhead protective covering
dropzone · terminal velocity · digital · audible · visual · AAD · reserve · ground level
cockpit
Pilot's control compartment
barometric · pressure · ceiling · climb · descent · airspeed · heading · instrument panel · avionics · navigation
sensor
Input-detecting device
- barometerInstrument gauging atmospheric pressure
- GPSSatellite-based location technology
- digitalOf discrete data
analog · precision · calibration · measurement · transducer · smartphone · wearable · watch · Garmin · accuracy
summit
Peak or diplomatic gathering
peak · climbing · trekking · Himalaya · acclimatization · expedition · porter · sherpa · mountain · ridge
freefall
Unimpeded downward motion
- jumpPropel oneself airborne
- parachuteDrag-creating descent device
- deploymentOrganized distribution of resources
canopy · dropzone · terminal velocity · digital · audible · visual · AAD · reserve · ground level · jumpmaster
- aerospaceairplane, helicopter, rocket, rockets, spacecraft
- measurementscales, gauging, balance, metering, gram
- analog technologyanalog clocks, analog clock, analog computers, film cameras, analog meter
- aircraft manufacturingfuselage, airframes, final assembly, assembly line, avionics
- high-altitude flightstratosphere, thin air, oxygen masks, supplemental oxygen, cabin pressure
- winter mountaineeringcrampons, ice axe, ice axes, avalanche, climbing rope
altimetersspeedometers
Instruments measuring travel rate
tachometers · odometers · compasses · pressure gauges · accelerometers
- radar altimeterDevice measuring altitude via radio waves