Barometer face is 10 across. Stimated date of manufacture circa 1800. The item “19th century mahogany banjo barometer by D. Borelli of Farnham” is in sale since Wednesday, April 06, 2016. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “rpoin” and is located in Austin, Texas. This item can be shipped to United States.