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"Bullshit Grinder" toy (ca. 1960)
"Bullshit Grinder" toy (ca. 1960)
Wooden ellipsograph (ca. 1900) now at Smithsonian
Wooden ellipsograph (ca. 1900) now at Smithsonian
Ellipsograph on display at Musée d'histoire des sciences de la Ville de Genève
Ellipsograph on display at Musée d'histoire des sciences de la Ville de Genève
A compound crank
A compound crank
Hand crank on a pencil sharpener
Hand crank on a pencil sharpener
Tibetan operating a quern (1938). The upright handle of such rotary handmills, set at a distance from the centre of rotation, works as a crank.
Tibetan operating a quern (1938). The upright handle of such rotary handmills, set at a distance from the centre of rotation, works as a crank.
Roman crank handle from Augusta Raurica, dated to the 2nd century AD
Roman crank handle from Augusta Raurica, dated to the 2nd century AD