A George III mahogany mercury stick barometer Pedraglio, London, circa 1810 With open triangular pediment above line-edged glazed door enclosing rectangular silvered Vernier scale calibrated in barometric inches and with the usual observations to the right opposing Fahrenheit scale spirit thermometer to the left, the upper margin signed Pedraglio Fecit, the moulded-edge trunk with visible tube flanked by figured mahogany veneers within line border over rounded base with hemispherical cistern cover inlaid with a concentric chevron parquetry band, 95cm (37.5ins) high.An M. Pedraglio is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working in London circa 1810-30.