Union spiral adder

Made:: 1905 in Germany

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Union' spiral adder of J. Ugrich (German, 1905)'
Science Museum Group
© The Board of Trustees of the Science Museum

"Union" spiral adder of J. Ugrich (German, 1905)

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Category:: Mathematics

Object Number:: 1936-191

type:: adding machine

credit:: Mr L.Malassis

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Union spiral adder

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