Antique Sympiesometer Barometer Victorian J. Graham Liverpool Rosewood Nautical Instrument This finely preserved Victorian sympiesometer was produced by J. Graham of Liverpool, a noted maker of precision scientific and navigational instruments during the 19th century. The sympiesometer was an early form of barometer, widely used aboard ships for measuring atmospheric pressure with greater responsiveness to temperature variation than traditional mercury…
George III period mahogany cased wall thermometer by Adams of Fleet Street London A well-conceived Georgian wall thermometer in a mahogany case which is perhaps the best I have seen in terms of its cabinetry. The case is mounted on a mahogany backboard graduating to the top into a hanging loop. The front case has a pagoda-style top with a…
Antique Georgian Mahogany Stick Barometer J. Whisker York c1815 Mercury Wall Barometer A fine early 19th-century Georgian mahogany stick barometer by J. Whisker of York, dating to circa 1815. The herringbone-veneered mahogany case features boxwood line inlay, a broken pediment, a silvered registered plate with manual vernier adjustment, and an original glazed door. The exposed mercury tube terminates in a…
Rare Victorian Silver Pocket Thermometer with Swivel Case, Late 19th Century A fine and unusual Victorian pocket thermometer dating to the late 19th century, elegantly housed in a cylindrical silver case with an ingenious swivel-opening design. When closed, the instrument presents as a compact and refined capsule, while a simple twist reveals the internal thermometer, protected by a hinged engraved…
