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Richard Twort
Marine Barometer by Negretti & Zambra, London
£ 285
£ 325
Richard Twort
Victorian Spiral Thermometer
£ 185
Richard Twort
Post War Oak Barograph
£ 485
Richard Twort
Early 1960s Mahogany Barograph by Casella
£ 585
Richard Twort
Edwardian Barograph in Walnut Case, Bryson
£ 685