A REGENCY BULB-CISTERN TUBE MERCURY STICK BAROMETER Zanetti and Agnew, Manchester, circa 1820 The arched case applied with visible tube and inset with two-piece boxwood scale calibrated in barometric inches and with the usual observations beneath stamped signature ZANETTI, &, AGNEW, MANC'ER to upper margin, with slender trunk over rounded base applied with hemispherical cistern cover. 88cm (34.75ins) high. Provenance: The Selwyn Demmy Collection. The partnership between Vittore Zanetti and his apprentice Thomas Agnew is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working from 94 Market Street, Manchester 1817-25. Condition Report: Tube is filled but has numerous airlocks. The scale is in good original condition however the simple wire recording pointed is missing its slider. The case has some slight chipping to the upper edge of the cistern cover otherwise is in good original condition with only minor bumps, scuffs and other minor age related blemishes. Condition Report Disclaimer