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SEXTANT BULLE [1 record]

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Filter results by subject field

Alphabetical list of terms

Record 1 1986-10-07

English

Subject field(s)
  • Aircraft Piloting and Navigation
DEF

A sextant used especially in aerial navigation in which the image of the heavenly body being observed is brought to the edge of a bubble instead of to the sea horizon, the bubble appearing in its proper position in the field of view only when the sextant is held so that its zero plane is the observer's horizontal plane.

French

Domaine(s)
  • Pilotage et navigation aérienne
CONT

Si la précision moyenne du sextant de marine est de l'ordre de la minute (...) celle du sextant à bulle ne dépasse guère 10' (point fait à 15 km près environ).

Spanish

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