Print. Engraving, stipple. Charles Babbage. Lucasian Professor of Mathematics in the University of Cambridge. Engraved by Roffe, by permission from an original Family Painting. [London:] Published 1st May 1833 by M Salmon, Mechanics Magazine Office. - 32x23cm, platemark 22.8x14.4cm, image 10.5x10cm. - Portrait, HL, vignette