Mahogany Slim-Door Marine Barometer, William Cary (1759-1825), London, circa 1820, with original ivory key, hanging plates and ring; inscribed on top plate Cary London. 11 x ¾ inch hand-engraved silvered brass 22 to 31 inches scale plate with vernier; 0 to 130 degree F thermometer on door with 11 x 1 inch plate. Original brass base, portable screw and washer with a later gimbal. Width at head 1-5/8″, frame 1-1/2″ tapering to 1-3/8″, length 39″ (all included).

Note: An almost identical barometer in Collection of the Mariners’ Museum, Newport News, Virginia (Accession number 1976.0024.000007A) is attributed to be of one of four barometers made for a British Antarctic expedition.