A WILLIAM IV MAHOGANY MERCURY STICK BAROMETER

A WILLIAM IV MAHOGANY MERCURY STICK BAROMETERTroughton and Simms, London, circa 1830With concave-sided upstand and cavetto cornice over glazed rectangular canted silvered Vernier scale calibrated in barometric inches and with the usual observations beneath signature Troughton, and Simms, LONDON to upper margin, the trunk with Vernier adjustment square to throat over applied glazed mercury tube Fahrenheit and Reaumur scale thermometer with ogee moulded crests to the upper and lower rails, the rounded base applied with circular disc cistern cover and with level adjustment screw to underside.105cm (37.5ins) high. Provenance: The Selwyn Demmy Collection. The partnership between Edward Troughton and William Simms is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as formed in 1826 and operating primarily from addresses in Fleet Street, London. Edward died in 1835 followed by William in 1860; the business was subsequently continued by their successors until 1922 when the name was changed to Cooke, Troughton and Simms.Condition Report: The tube is filled with no apparent airlocks. The scales are in fine condition with minimal discolouration/mellowing to the scales and the Vernier slide is operational. The thermometer is in fine condition. The case is in very fine condition with visible faults very much limited to a very small veneer chip where the trunk meets the rounded section at the base. Condition Report Disclaimer