? A George III mahogany mercury stick barometer with hygrometer Wisker, York, circa 1800 The

? A George III mahogany mercury stick barometer with hygrometer Wisker, York, circa 1800 The ebony banded case with swan-neck pediment and cavetto cornice above inset silvered Vernier scale calibrated in barometric inches and with the usual observations beneath signature Wisker, York to upper margin set behind flush-fronted glazed door, the trunk with hygrometer over conforming inset silvered Fahrenheit scale mercury tube thermometer with decorative border to the bulb aperture and leaf crest to upper margin behind flush glazed cover, the rounded base with circular moulded domed cistern cover, (part dis-assembled), 96cm (37.75ins) high. Provenance: Private collection Hampshire (B163). A Matthew Wisker is recorded in Banfield, Edwin BAROMETER MAKERS & RETAILERS 1660-1900 as working from Spurriergate, York 1777-1804. He was succeeded by his son, John, who presumably continued the business until his death in 1822. The firm was subsequently managed by John s widow, Elizabeth, who in-turn passed it on to their son, Matthias in 1827.Cites Regulations Please note that this lot (lots marked with the symbol ? in the printed catalogue) may be subject to CITES regulations when exported from the EU. The CITES regulations may be found at www.defra.gov.uk/ahvla-en/imports-exports/cites