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Title: Example of Gunning's first gas controller for street lamps, [Go to resource]
Description: Example of Gunning's first gas controller for street lamps, switching "on" and "off", patented 1899 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: street lamp gas controller
timerTemporal: 1899 Source: Science Museum Creator: British, Foreign and Colonial Automatic Light Controlling Company Ltd. Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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