I always used a visually adjustment of the Azimuth. Usually I took a listening session whether the Azimuth was set correctly which always went fine!
Nevertheless I was interested if an electronical measurement will bring the same results or if I have to readjust.
The Sperling PDM-1 Azimuth Controller is now in place. I will report about my findings:
AudioCirc.com 
Nothing like a big analog meter, love it!
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There’s a software based turntable set-up tool called Analog Magik. Given all the turntables, tonearms ans cartridges you own, maybe it could be a good option for you. A friend of mine let me try it in his house and I found it really usefull.
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Thanks Mikael,
Very interesting. They are using the Acoustical Systems set up too.
Best
E.
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