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Title: Adolf Sonnenschein's 'Arithmometer', late 19th century. [Go to resource]
Description: Arithmetical teaching aid, "A. Sonnenschein's Improved Arithmometer", in two boxes 1 (A and B) and 2, made by George Philip and Son, London and Liverpool. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: educational aid Temporal: late 19th century Source: Science Museum Creator: Sonnenschein, A. Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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