Antique altimeter or barometer. Made in london by baker opticians, see closeups. Appears to have original glass. Overall size is 3 inches in diameter and a little over 1 inch thick.The item “Antique Bakers London Altimeter Barometer” is in sale since Monday, March 30, 2015. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “brikwood” and is located in Middleburg, Virginia. This item can be shipped to United States.