I've had good results from the DB systems protractor which matched a Grado jig that I have used previously, if that validates anything. The mirror is nice but can't you just align azimuth with a pocket mirror?
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please elaborate: where can I find this $100 Wallytractor?Following up on Mac's question: I use the HFNRR test record to optimize tracking force, antiskate, & VTA. (That's Hi Fi News & Record Review; available from Audio Advisor or Music Direct). You can also test azimuth with this record if desired. But the test record offers adjustment improvements separate from the basic alignment adjustments made with the protractor alone, so I assume the both are required anyway.
The Wallytractor is custom cut for each tonearm. You use it to set the stylus to pivot point distance (overhang) which reduces tracking error. You also use it to align the stylus cantilever perpendicularly to the record grooves. I use it in conjunction with the HFNRR disc. M. Fremer has done a couple of articles within the last year on Wally products in Stereophile.