->  FWIW, many, if not most, TV shops in the 50's and 60's had a
->  flying-spot scanner that scanned an image inserted into it
->  and produced a weak signal for a TV.  Those shops often had
->  an advertisement displayed on a set in the front window
->  overnight until they discovered it "burned" into the CRT.
->  Those instruments were great for getting a signal on a TV
->  to adjust width, heighth and linearity when there wasn't
->  an Indian head signal available from a station.

 I well rembember those even though I never used one. I was sailing the
7 seas, at the request of my Friends and Neighbors, before my home town
even had TV. Of course being an IC Electrician I would have been
involved with TV if I had have been on a Large ship instead of a
Submarine.
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