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)., Rijk (attributed to), Netherlands, 1844, wood (plant material), brass (alloy), h cm × w cm × d 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)., Rijk (attributed to), Netherlands, 1844, wood (plant material), brass (alloy), h cm × w cm × d cm

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Size: 7333px × 5181px
Location:
Photo credit: © Artokoloro / Alamy / Afripics
License: Licensed
Model Released: No

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