Late Victorian Geissler Tube Cross Vacuum Scale Crookes Tube for sale an example of which is

an example of which is amongst the collection of the Oxford History of Science Museum

so that the wind cannot move it

Following the success of the 1851 Exhibition

advertisements in the Spectator for the company’s “newly-invented operative voice conductor”

Late Victorian Geissler Tube Cross Vacuum Scale Crookes Tube for sale an example of which isFor sale, a Late Victorian Geissler Tube Cross Vacuum Scale This uncommon set is comprised of an ebonised wood base and upstand. The former has a metal stand which provides a base for holding six Geissler tubes which are in turn fastened at the top by brass electrical connection points secures to the upstand. Each Geissler tube has an attached label numbering successively from 1 to 6 and the base and the side of the upstand are also fitted with a