Picht braille-writer c.1900, first developed by Oscar Picht, director of the Provincial School for the Blind in Bromberg, Germany, and later director of the State Blind Institute Berlin-Steglitz. First manufactured in 1899 by the company B.R. Herde…
An accessible calculator, designed and adapted by James Swail of the NRC around 1975 that converted the visual digital display through an auditory and tactile board.