Cornelius Knudsen Kjobenhavn Aneroid Barometer Wood Brass Beveled Glass. Acquired from a friend from Greenland. It has some markings on the back of the case : 527 and what appears to be a medical symbol with the letters H F. This particular model / maker seldom comes up for sale. See the photos for details. The item “Danish Cornelius Knudsen Kjobenhavn Aneroid Barometer Wood Brass Beveled Glass” is in sale since Tuesday, November 27, 2018. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “bubbacrumb” and is located in Chicago, Illinois. This item can be shipped worldwide.