Y A GEORGE III MAHOGANY MERCURY STICK BAROMETERTHOMAS HARRIS...

Estimate

£250 - £350

Y A GEORGE III MAHOGANY MERCURY STICK BAROMETERTHOMAS HARRIS AND SON, LONDON, CIRCA 1805The case with open triangular pediment above rectangular glazed mahogany door, enclosing silvered Vernier scale calibrated in barometric inches and with the usual observations beneath signature Tho's Harrs & Son, Opticians to his Majesty to the right-hand side, opposing Fahrenheit scale mercury thermometer to the left, with Vernier adjustment square to throat and visible tube to the caddy moulded trunk over hemispherical cistern cover to the rounded base incorporating level adjustment screw to underside.99cm (39ins) high, 13cm (5ins) wide.Thomas Harris and Son are recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as a partnership between father and son, both named Thomas, formed in around 1802. Thomas Harris senior is noted as working as an optician, mathematical instrument and globe maker from 1790; and his son from 1802. Both makers are listed as worked from 140 Fleet Street, London in 1804, and then Thomas junior alone at Hyde Street, Bloomsbury in 1808 - having most likely inherited the business from his father who died in 1806. Thomas Harris junior served as a Sargeant in the Bloomsbury Volunteers and died in an unfortunate fire at Covent Garden Theatre in 1808.

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