Hello,

I had just purchased a reflectoscope m90 on ebay upon taking it apart i noticed these components on the CRT screen side of the board labeled VR1,2,3. From what I can tell they only have two legs to them and either hold a vacuum or gas. I was wondering if anyone is able to tell me what they are.

thank you,

 

They are neon bulbs. They are used as high voltage regulators or as surge arresters.