 Water wheel designs in order of increasing complexity and… |  Transformation of rotary motion into linear motion can be achieved by… |  The cam principle was applied in a rock-crushing mil illustrated by… |
 Gristmill outside the city wall in Diyarbakir, Turkey. Photographed… |  Water channel leading to the header tank on the gristmill.… |  Inside the gristmill inDiyarbakir, Turkey. Photographed by: Roger D.… |
 Montell Seely constructing his overshot water wheel. Photographed by… |  Schematic of a Nuristani gristmill. Edelberg and Jones |  Completed water wheel constructed by Montell Seely in Castle Dale… |