First flat-faced CRT?

[zenith2134]

hey Andy, I forgot about that Zenith monitor. Probably what I was thinking of. I didn't know that the cheap flat CRTs had a curved inner surface..I like finding out small details like that..Nowhere else on the internet can someone really find out all this lost knowledge on old TV technology!
Username1, it is interesting what you said about the shadow mask warping on some of them..I actually made a thread here once asking about just how high the temperature of the mask can get in a color TV.
jr_tech-I'm not surprised that Tektronix had a hi-rez flat tube..just about all of their stuff was high quality and very expensive!! Wonder how many of these still exist?
Geoff Bourqin, would you say that the Zenith monitor which Andy pointed out uses that FTM tube?