A brass cased Naudet pattern aneroid 'Holosteric'

A brass cased Naudet pattern aneroid 'Holosteric' barometer Pertius, Hulot and Naudet, Paris, circa 1870 The 4.75 inch circular open-centred silvered register calibrated in barometric inches with ususal annotations to upper section and mounted with alcohol and mercury Reaumur, Fahrenheit and Centigrade scale thermometers to lower section, the upper margin of the centre inscribed HOLOSTERIC BAROMETER and with serial number 5559 between the thermometer bulbs, the circular bevel glass fitted with a brass recording pointer retained in a moulded brass case with suspension loop and circular trademark P.H.B.N. stamped to the rear, diameter 21cm (8.25ins). Provenance: Private collection, Hampshire (ref. B55). The current lot is an English market version of the model produced by the firm of Naudet, Hulot and Cie (later Pertius, Hulot and Naudet) in Paris after Vidie's patent for the aneroid barometer had expired in 1859. A similar example retailed by Edward George Wood of London was sold in these rooms The Banfield Collection of Barometers 4th September 2007 lot 18.