This tube is intended for investigation into the nature
of gaseous discharge at various pressures & voltages.
The tube has two removable flanged end bulb with internal
phosphor coatings, a flanged body tube, two metal electrodes
with 'O' ring seals an adjustable leak value for varying
the pressure in the tube, and two pieces of vacuum hose.
The tube fit into the Universal Stand and has been designed
to work at voltages upto 5kV and pressure in the region
of 10-2 to 10-5 torr.