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Description: | GRIFFIN LONDON 110 (maker's trade name engraved in the ebonite base and model number?). RS 9 (in red paint on the underside of the base). MANU John J. Griffin and Sons Ltd circa 1900 London, England DES after RUHMKORFF,Heinrich,Daniel. circa 1851 15, rue des Macons-Sorbonne, Paris, France. This is a low voltage commutator also known as a reversing switch or inverter. | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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