Tom blok Photo collection by Th.Schiöler Spiral scoops, screws and the chain pump The Archimedean screw Photo 148
The Archimedean screw
Gul streg
Photo 511 x 506 pixels, 43,6 K
 
An Archimedean screw on a rickshaw
This screw was made by a Danish aid organization, which wanted to introduce a well-known technology into Bangladesh. It failed.
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