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Title: Circular slide rule, c 1870. [Go to resource]
Description: Engineer's circular slide rule, by Alfred Apps, London, with case, c.1870. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: circular slide rule Temporal: 1870-1875 Source: Science Museum Creator: Apps, Alfred Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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