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Title: Plesch type tonoscillograph, London, England, 1931-1940 [Go to resource]
Description: Plesch tonoscillograph with tonoscillogram(?),m in wooden case, German 1931-1940 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: tonoscillograph Temporal: 1931-1940 Source: Science Museum Creator: Hawksley and Sons Limited and Sons Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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