A Fine Quality Flame Mahogany William IV Five-Piece Wheel Barometer, the fine quality break arch swan neck pediment with no damages, the slender elegant shaped flame mahogany case with boxwood stringing surmounted by a brass urn shaped final, the silvered engraved 8-inch diameter main-register contained within a cast polished brass bezel with convex glass, the bayonet fixed alcohol thermometer with silvered engraved scale, hydrometer to top with an engraved silvered spirit level to bottom of case warranted, circa 1830-1840 Size: 45” x 12” x 2”.