A FINE OXIDISED BRASS NEWMAN-PATTERN MERCURY STATION BAROMETERJOHN FREDERICK NEWMAN, LONDON, MID 19th CENTURYConstructed with two square section uprights joined at the top with a D-shaped section inset with silvered plate engraved F. NEWMAN, 122 Regent Street, LONDON, over cavetto moulded cornice and central large-bore tube with silvered scale calibrated in millimetres to the left opposing later brass for millibars to the right with rack and pinion adjted Vernier slide between, the throat with plate engraved with Met Office MO trademark and number 1517 over Vernier adjtment screw and further Met Office plate with calibration note to the right hand upright, the base with substantial cylindrical cistern with band of glazed apertures and incorporating mercury tube Kelvin scale thermometer with bulb immersed in the cistern to left hand side, the instrument spended via pivoted joint from a scroll-cast bracket with conforming steady bracket to base from an arched caddy-moulded mahogany panel for wall hanging.The board 133cm (52.5ins) high, 20cm (8ins) wide.Provenance: The exhibition collection of Barometer World Meum, Merton Devon. Acquired direct from the Meteorological Office after withdrawal from e in a Caribbean station believed to be either the Bahamas or Bermuda.John Frederick Newman is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working at 7 and 8 Lisle Street, London, 1816-25 then 122 Regent Street 1827-62 when the biness was taken over by Negretti and Zambra. He made standard and portable barometers for James Clark Ross's Antarctic expeditions (1839-1843) and exhibited at the Great Exhibition at Crystal Palace in 1851. Newman's design of station barometer incorporates movable scales to allow calibration against the mercury level in the cistern which may vary very slightly with changes in temperature. After taking-over the biness in 1862 Negretti and Zambra continued making barometers to Newman's design including an example which was sold in these rooms on 2nd October 2019 (lot 41) for 2,600.