Advice on CRT tester/s

[AlanInSitges]

Admiral Bob (bandersentv here) has tons of videos on YouTube about how to use the CR70 (I think he has another Sencore as well, can't remember). Most of the Sencore models are pretty similar, the main difference being memory functions for comparing the emission balance between different guns of a color tube and additional rejuvenation options.

I just bought a NOS CR161 still in the box with manual, sales receipt, and a 1971 Sencore Newsletter with service tips and news about new products. I got it for $75, it has all the adapters, and powered up and worked just fine right out of the gate. You don't have to buy an expensive one to test 1950s CRTs.