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Title: Small Obach tangent galvanometer by Siemens Bros [Go to resource]
Description: Small Obach tangent galvanometer by Siemens Bros. & Co., London, No. 24 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1883 Source: Science Museum Creator: Siemens Bros. and Co. (maker) Identifier: 1983-390 Go to resource More Like this...
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