A REGENCY MAHOGANY MERCURY CISTERN-TUBE MARINE STICK BAROMETERCARY, LONDON, EARLY 19th CENTURYWith brass suspension ring above plate engraved Cary, London and hinged rectangular door enclosing canted silvered Vernier scale calibrated in barometric inches 27 to 31 opposing conforming angled plate annotated with the usual observations, the inside of the door applied with mercury Fahrenheit scale thermometer, the rectangular section trunk with Vernier adjustment key and later brass gimbal mount fitted via pivot holes to the slightly bowed sides, the base with stepped ebonised moulded cylindrical cistern cover incorporating narrow elongated projection to underside.97cm (38.25ins) high with handle down, 6.5cm (2.5ins) diameter at the cistern.The celebrated Cary family business of scientific instrument and globe makers was established by John Cary at Johnson's Court, Fleet Street, London in 1782 moving to a new address at 'Corner of Arundel Square', Strand the following year. He was primarily an engraver of maps, charts and globes who moved again in 1783 to 188 Strand. By 1791 he had entered into what appeared to be a relatively casual partnership with his brother, William; this partnership lasted until circa 1816 by which time William and John Cary had moved again to 181 Strand before finally settling in 86 St. James in 1820. The following year he was succeeded by his sons, John (II) and George Cary, who continued from the firm's 181 Strand address until 1851/2 when the business was acquired by Henry Gould.