A George III mahogany mercury stick barometer with hygrometer, John Hawting, Oxford, circa 1790 The chevron line inlaid and crossbanded case with open triangular pediment and cavetto cornice above hygrometer, the inset silvered Vernier scale calibrated in barometric inches to the right hand margin opposing weather observations over engraved putto infill to the left, the upper margin signed Jn’o Hawting, Oxford set behind flush hinged glazed door, the trunk with conforming inset silvered Fahrenheit scale alcohol tube behind hinged glazed cover, the rounded base with hemispherical domed cistern cover above brass level adjustment screw to underside, 114cm (41ins) high.John Hawting is recorded in Baillie, G.H. Watchmakers & Clockmakers of the World as working in Oxford 1765-91.