Model of an Archimedean Screw. Working model of a mortar mill. The mortar is placed vertically in a wooden bin and is powered with a wheelchair with a crank. The raised water runs over a short lip and back in the container.
Size: 1797px × 2500px
Photo credit: © BTEU/RKMLGE / Alamy / Afripics
License: Licensed
Model Released: No
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