I have no way of knowing if the gauge works or how accurate it may be. Approximately 11 inches in diameter, including wood case.The item “ABSOLUTE PRESSURE-MILLIMETERS OF MERCURY-WALLACE&TIERNAN” is in sale since Sunday, October 05, 2014. This item is in the category “Collectibles\Science & Medicine (1930-Now)\Scientific Instruments\Other”. The seller is “woodenworks” and is located in Niles, Ohio. This item can be shipped to United States and to Canada and to United Kingdom and DK and RO and SK and BG and CZ and FI and HU and LV and LT and MT and EE and to Australia and GR and PT and CY and SI and to Japan and to China and SE and KR and ID and to Taiwan and TH and to Belgium and to France and to Hong Kong and to Ireland and to Netherlands and PL and to Spain and to Italy and to Germany and to Austria and IL and to Mexico and to New Zealand and SG and to Switzerland and NO and SA and UA and AE and QA and KW and BH and HR and MY and GT and SV and HN and JM.
