A Good Duddell Thermo-Galvanometer,
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Description
English, c.1910, signed to the surround of the window 'The Cambridge and Paul Instrument Co, Ltd, England' on large lacquered brass base (23cm diameter) with three screw feet, with tall black tube covering the instrument inside, height 35cm tall Note: The thermo-galvanometer is an instrument for measuring small electric currents. It was invented by William Duddell about 1900
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A Good Duddell Thermo-Galvanometer,
Estimate £80 - £120
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Item located in Thatcham, Berkshire, ukOffers In-House Shipping
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