For observing phenomena (for example cathode glow, positive column, canal rays) that occur during electrical discharge in a variety of gases at various pressures. Either end of the discharge tube is equipped with a fluorescent screen, and can be unmounted and installed in tube holder U18505. Product includes a needle ventilation valve and vacuum hoses.
|Dimensions||7.1 x 6 x 4.4 in|
|Brand||3B Scientific Teltron|