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Here's another classic. This one is good for rectangular-mask sets, but also has the side curves right for round-mask sets. The main circle was probably used for Zenith and other porthole sets. The original graphic isn't perfect, though, so the resolution marks are slightly blurred. I have been trying to find time to design a new test pattern.
I placed a printout of this under a TeleSensory "Chroma CCD" video inspection table unit that I use, connected its NTSC output to a VCR along with a 400-Hz audio source and hit "Record" so I now have TWO genuine test pattern tapes for use in the shop.
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