Altimeters

The watches will feature various functions useful to hikers, climbers and divers such as altimeters, barometers, compasses, thermometers, and timers. ❋ Unknown (2010)

“Efforts to measure changes in the Greenland Ice Sheet from field observations, aircraft and satellite remote sensing †“such as altimeters that measure surface height †“have improved our knowledge over the past decade. ❋ Unknown (2006)

So the Jason-1 and Jason-2 satellite altimeters measure sea surface height. ❋ Bente Lilja Bye (2009)

All commercial operators would be required to install advanced altimeters and give every pilot — even those licensed to work only in visual-flight conditions — periodic training to handle sudden changes in visibility that force them to rely on their instruments to fly. ❋ Andy Pasztor (2010)

They're using these small aircraft that can fly up and down the coast with laser altimeters on them. ❋ Unknown (2010)

Mr. PERKINS: Well, I mean, this use of laser altimeters is really interesting now. ❋ Unknown (2010)

Therefore, at the designated height the barometer actuated four radar altimeters, all linked to one another. ❋ Barrett Tillman (2010)

So the Swansea researchers flew laser altimeters over the glaciers to estimate their changing volumes and, indirectly, their changing velocities. ❋ Unknown (2009)

Don't trust the accuracy of digital altimeters, I say; up here, it's only us. ❋ Unknown (2009)

Investigators urged Boeing to consider warning pilots about using automatic landings systems when radio altimeters aren't working. ❋ Unknown (2009)

The Boeing 737's instrument panel had other types of altimeters, using systems separate from the radio-altimeters, that pilots normally use to track flight altitude. ❋ Unknown (2009)