Also known as: obs.
OBS has various meanings in the Governmental & Military category. Discover the full forms, definitions, and usage contexts of OBS in Governmental & Military.
Relating to obstetrics.
Governmental & MilitaryA knob on an omni-bearing indicator which the pilot turns to select a radial from a VOR station.
Governmental & MilitaryMeasurement of altitude and bearing of a heavenly body. Measurement of tidal phenomena
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