Modelled, textured and rendered in Blender. Initially conceived in Austria in the 1930's by Curt Herzstark, who continued to develop the design even after he was sent to Buchenwald concentration camp. Brought into production in the late 1940's, Curtas, about the size of a small pepper mill that could be easily held in one hand, were considered to be the very best portable calculator until they were gradually displaced by electronic machines in the 1970's.
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