This is one of a series of photographic material in print, negative and/or digital formats covering CSIRAC machine and the people associated with it. The series was acquired from the University of Melbourne in 2003.

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Specimen piece of the Babbage Difference Engine No. 1 - purchased by Powerhouse Museum, Sydney in 1996.. One of only six demonstration pieces assembled by Charles Babbage's son Henry, after his father's death, utilising parts manufactured for the original Difference Engine project. Image collected for inclusion in the book 'The Last of the First', published 2000.

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