I have recently received a non-operational Tektronix 2215 O'scope.
I've found a couple of things so far, one being an item I can't fully identify, because I'm not familiar with the schematic symbol.
From the Service Manual I have that it is "LAMP,GLOW:90V,0.3MA"
I have tried to find this on Digi-Key, Mouser, Jameco, Futurlec, Goldmine Electronics, and a few other sites but have not found a match.
Any help with finding a suitable replacement, or using others in series would be the same?
If someone could look at the schematic and let me know. I will also attach a picture of the item.