CRTs, avionics displays, that's the only thing I can think of, as for TV's, maybe there are some CRT plants still running in China or South America but that's getting of topic. I think a rectangular logo would have been better maybe with TEK on the top and TRONICS in smaller print underneath. In terms of how you pronounce or say Tektronix it's Tek-Tronix, two T's not TK, is it TK-Maxx or something ? Got to be "TEK" not "TK".