FitzRoy storm barometer

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FitzRoy storm barometer
Manufacturer	Negretti & Zambra
Production years	1876-1884
Production location	London

Admiral FitzRoy (patent) storm barometer, by Negretti & Zambra, 1 Hatton Garden, 122 Regent Street, 9 Cornhill, London, England, 1876-1884. Fitted with dry and wet mercury thermometers and ordinary mercury thermometer, serial no. 1265.

Admiral Robert FitzRoy realised that changes in barometer readings could be passed to a central office, analysed, and storm warnings issued quickly enough to be useful. For many ports, the storm warning system was enhanced by a barometer set at the mouth of the harbour, with indications of likely weather based on the rate of rise or fall of the mercury. Weather rules were added to help interpretation.

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[edit] In the Science Museum's Records

Inv. No: 1962-155