Bi-metallic recording thermograph serial no. 45471 by Negretti and Zambra Ltd

Made:: 1960-1979 in London

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Bi-metallic recording thermograph serial no
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Bi-metallic recording thermograph serial no. 45471 by Negretti and Zambra Ltd, London; with clock and recording drum mechanism by Gluck Barograph and Recorder Co Ltd, marked 7D 8RD

Details

Category:: Heat

Object Number:: 1992-499

type:: recorder

credit:: Eastern Electricity. Appliance Testing L

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Bi-metallic recording thermograph serial no. 45471 by Negretti and Zambra Ltd

Details

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