A 19th century mahogany banjo barometer

A 19th century mahogany banjo barometer, with a swan neck pediment and ivory mounts, to a hygrometer and thermometer above a convex mirror with ebonised reeded frame, the main 8 inch dial above a level, the dial inscribed Warranted Correct, the case with ebony and boxwood stringing, 38.5in (98cm) h.