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(entry: referentni nivo za merenje visine, tip: Glossary, Dictionary, Acronyms, and, Abbreviations, found: 1 entry(ies))
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referentni nivo za merenje visine
The arbitrary level from which vertical displacement is measured. The datum for height measurement is the terrain directly below the aircraft or some specified datum; for pressure altitude, the level at which the atmospheric pressure is 29.92 inches of mercury (1013.2 m.bs); and for true altitude, mean sea level.