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14 results filtered with: X-ray and discharge tubes
  • Discharge tubes: aluminium disc cathode and rod anode
  • Crookes' type discharge tubes
  • Discharge tubes for experiments on effects of cathode rays
  • Geissler tubes.
  • Geissler tubes with complicated design.
  • Geissler tubes of complicated design.
  • Geissler tubes with a complicate design.
  • Discharge tubes- various types of anode and cathode.
  • Geissler tubes with complicated design.
  • Discharge tubes- various types of anode and cathode.
  • Discharge tube with anode in shape of Maltese Cross
  • Discharge tubes- various types of anode and cathode.
  • Geissler tubes of complicated design.
  • Geissler tubes.