alb4544617
Model of a Double-Threaded Archimedean Screw Propeller. The corridors go twice and are divided into segments painted blue and white, from which a normal two-blade screw can be constructed. The screw can be turned by hand on the screw shaft. The pitch is approx. 11 cm, the diameter 8 cm. 1:20 scale (derived)., P.N. Rijk (attributed to), Netherlands, 1844, wood (plant material), brass (alloy), h 14.5 cm × w 30.8 cm × d 11.5 cm.
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Model of a Double-Threaded Archimedean Screw Propeller. The corridors go twice and are divided into segments painted blue and white, from which a normal two-blade screw can be constructed. The screw can be turned by hand on the screw shaft. The pitch is approx. 11 cm, the diameter 8 cm. 1:20 scale (derived)., P.N. Rijk (attributed to), Netherlands, 1844, wood (plant material), brass (alloy), h 14.5 cm × w 30.8 cm × d 11.5 cm
Crédit:
Album / quintlox
Autorisations:
Modèle: Non - Propriété: Non
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Taille de l'image:
7333 x 5181 px | 108.7 MB
Taille d'impression:
62.1 x 43.9 cm | 24.4 x 17.3 in (300 dpi)
