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(entry: referentni nivo, tip: Glossary, Dictionary, Acronyms, and, Abbreviations, found: 2 entry(ies))

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    referentni nivo

    datum level
    A surface to which elevations, heights or depths on a map or chart are related.
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    referentni nivo za merenje visine

    altitude datum
    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.