Y A WILLIAM IV/EARLY VICTORIAN ROSEWOOD MERCURY WHEEL BAROMETERP. CORTI, EXETER, CIRCA 1835-45The 8 inch circular register engraved with a country view with church and windmill to centre within concentric scale calibrated in barometric inches and with the ual observations within cast brass convex glazed bezel, the rosewood case with hygrometer to the swan neck pediment over arched Fahrenheit scale spirit tube thermometer to the balter upright fitted with convex mirror within reeded bezel beneath, the square base with recording hand setting square above glazed spirit level inscribed P. CORTI, EXETER and cavetto moulded underside.99cm (39ins) high excluding finial, 25cm (10ins) wide.Provenance: The retail stock of Barometer World Meum, Merton Devon.Paul Corti is recorded in Banfield, Edwin BAROMETER MAKERS & RETAILERS 1660-1900 as working from 5 Market Street, Exeter circa 1830-60.