alb3811265
Alidade, Navigational Tool
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Titre: Alidade, Navigational Tool
Légende: Voir la traduction automatique
An alidade (archaic forms include alhidade, alhidad, alidad) is an instrument for taking bearings, consisting of two arms revolving around a circular brass plate or dial marked with points and degrees of the compass. It is secures on top of the binnacle hood and set to the ship's course, so that any bearing given by it will represent the magnetic bearing as by the compass beneath.
An alidade (archaic forms include alhidade, alhidad, alidad) is an instrument for taking bearings, consisting of two arms revolving around a circular brass plate or dial marked with points and degrees of the compass. It is secures on top of the binnacle hood and set to the ship's course, so that any bearing given by it will represent the magnetic bearing as by the compass beneath.
Crédit: Album / Science Source / New York Public Library
Autorisations: ? Autorisation de modèle: Non - ? Autorisation de propriété: Non
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Taille de l'image: 3468 × 3075 px | 30.5 MB
Taille d'impression: 29.4 × 26.0 cm | 1365.4 × 1210.6 in (300 dpi)
Mots clés: ILLUSTRATION • NAVIGATION
