Tom blok
Hydraulic noria in the Islamic World
Gul streg
Photo 511 x 506 pixels, 43,6 K
 
Water-wheel from Iraq
Here we have eight wheels working side by side, but not on the same shaft.
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Photo 511 x 506 pixels, 43,6 K
 
A hydraulic noria from Hit, located about 150 kilometres west of Bagdad. On the drawing, we see only one wheel, but actually there are five more.