im hopeing to aquire 2 crt testers but im not sure which one would be better suited for 1960s round crts one is b+k precision model 466 and the other is b+k model 440 does anyone have an idea which is best. there is another that is b+k 400 that i was not looking at.the 440 seems to have a heater adj but the 400 i dont see that adj on it. thanks all.
