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Would love to see a video of someone doing a complete visual alignment using a VA-48 or 62. I think those units were primarily marketed as a visual tool for verifying a sets frequency response, however there's quite a bit of mystique surrounding how one would actually proceed to do a full alignment. I'm not suggesting that it cannot be done, but I don't believe it ever caught on as a standard that was suggested in servicing literature of that period? And from a strictly educational point of view, it's not really very applicable to ones better understanding the operation of a set's video response curve. But I can certainly see how these were attractive to a very busy service shop, and even as a tool to show the uneducated customer that their set was in fact performing within spec.
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