These include special altimeters with high accuracy for small altitude measurements and also lesser dependence on weather conditions.

Mr. Murphy leads a "meteorite posse" of mostly volunteers and plans to keep gathering data, including witness accounts, compass bearings and altitude measurements, for at least one more week before conducting a ground search.

In other words, each needle points to a different digit of the current altitude measurement.

Up or down commands are used because altitude measurement, for now at least, is more accurate than longitude and latitude.

Versions were also developed that replaced the altitude measurement with a radar altimeter for low-altitude use, but these Mk.

It is unknown if the pilots were aware of the decreasing speed, and if they were aware that the wrong altitude measurement directed autothrottle action.

The vertical datum is a theoretical reference surface for altitude measurement and plays vital roles in many human activities, including land surveying and construction of buildings and bridges.

Meaconing in this case could provide a drone with false altitude measurements, causing a crash landing.

The sextant was used with great care and only for lunars, while the octant was used for routine meridional altitude measurements of the sun every day.

The Australian Height Datum is a geodetic datum for altitude measurement in Australia.