Diameter is 22.5 cm. Very nicely and everything is origina lacquer. The item “Barometer” is in sale since Thursday, February 02, 2017. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “hardang7″ and is located in Fjellhamar, default. This item can be shipped to United States.