Old and measures about 2 inches. Overall in great shape. Case also in great shape. Seems to work fine. Listing and template services provided by inkFrog. The item “ANTIQUE BRASS COMPENSATED BAROMETER-R. WEISS DENVER-LONDON-POCKET-withCASE-NR” is in sale since Thursday, November 28, 2019. This item is in the category “Collectibles\Science & Medicine (1930-Now)\Scientific Instruments\Barometers”. The seller is “freshpickinz” and is located in southern NJ. This item can be shipped to North, South, or Latin America, all countries in Europe, all countries in continental Asia, Australia.