E/M tube after Wehnelt, Germany, Neva, 40/50s. This tube was used for demonstrating the curving of the cathode ray by a magnet and as a substitute for the classic Thomson E/M tube with an Helmholtz coil. The oxide cathode produced a fine cathode ray beam. The goods are packed carefully, especially glassware and very fragile.The item "E/M tube after Wehnelt, Germany, Neva, 40/50s" is in sale since Monday, February 01, 2016. This item is in the category "Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Other Antique Science Equip".
The seller is "tesla9004" and is located in Volpiano. This item can be shipped worldwide.