VTA and SRA?

Well, I'm a mathematician so I'm certainly not challenged by geometry but I am challenged to measure 1 or 2 degrees angle on something I can barely see.

Not trying to be dense here but the articles above from TAS and vinyl zone seem to contradict each other on SRA.

The first shows SRA measured off a line running along the back edge of the stylus while the second says it is off a line running through the vertical axis of the stylus.

Whether SRA is worth measuring is another question altogether, one that's been discussed to death on many threads.

My own view is that while I can measure SRA on most styli I choose not to, since I've found it to be a waste of time. SRA differs from record to record, as Atmasphere just noted, so the best way to set it is by ear. Adjust as little or as often as one's ears and listening preferences require.

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The vinyl zone and TAS definitions do contradict, and neither is correct. That's why I posted that the vinyl zone article was "almost" correct.

Re-read my SRA definition above.

Ah, now I get it. Thanks Doug! As always we can count on you to sort out the confusion.

If your tonearm does not have VTA adjustment on the fly, using a USB computer magnifier scope and overlaying the stylus image over protractor software and adjust the SRA to 92 degrees is a good start.