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https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13962994

A mechanism to enable an armless person to write with a pen by operating a treadle with the foot. Engraving by G. Gladwin after R. Cocking, ca. 1820.

Original public domain image from Wellcome Collection

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A mechanism to enable an armless person to write with a pen by operating a treadle with the foot. Engraving by G. Gladwin after R. Cocking, ca. 1820.

More