What is more accurate , the fozgometer or the diplay of the oscilloscoop

My now retired piano tuner did everything by ear and he did an awesome job.  My current (younger aged) piano tuner does everything with electronic instruments with equally good results.  Moral of the story, today's electronic instruments have the ability to replace years of training, skill, and talent. Today we have options. 

" My now retired piano tuner did everything by ear and he did an awesome job.  My current (younger aged) piano tuner does everything with electronic instruments with equally good results.  Moral of the story, today's electronic instruments have the ability to replace years of training, skill, and talent. Today we have options."

I don't see how any of that applies here. Not only that, the last 2 sentences are just plain wrong (unless there's a communication issue and I don't understand your statement as you meant it.). An azimuth adjustment is in no way similar to tuning a piano. Azimuth is an angle. It has nothing to do with music, and its either right or wrong. You may be able to get it partially adjusted by ear, or maybe by sight, but to get the best results, measurements need to be taken.

As for the rest of it, unless you're talking about specific areas where certain electronics may be able to do a better job than the ear, you may have something. If you mean it to be a blanket statement, its not even close to being true. I'm still waiting for someone to tell me how to measure timber. 

@mb1audio02 -- unfortunately you’re plain wrong when it comes to measuring azimuth using a test tone and whatever instruments you choose. As Joel notes in the piece I linked to crosstalk is not consistent with frequency and unless you have the time and patience to measure at multiple frequencies setting by ear will give the best results

There have been other methods suggested in the past. A particularly popular one was offered byVictor Khomenko in the late 90s and seems to have been widely accepted since. In our experiments, we’ve found that, while this method works very well at a given frequency (most people seem to use a 1 KHz tone for this purpose), it is unfortunately not consistent throughout the frequency range found in music. We discovered that after adjusting the azimuth for perfect balance at 1 KHz with this method, voltage readings with a 100 Hz and a 8 KHz tone give widely different results; one channel would be greatly emphasized at the lower frequency, and the other one at the higher frequency. So while the method is theoretically sound, it fails to address the reality of the musical signal, which is far more complex than a single sine tone. So, until a better and more reliable method is established, our ears will do nicely... and they’re free...
Additional note: to be fair, it has been suggested that crosstalk is not constant on all cartridges. Some cartridges (a few?) demonstrate excellent consistency across their frequency range, while many don’t. For what it’s worth...

ps for measuring timber I’ve found a tape measure works quite well 😏 , measuring timbre requires a depth of musical experience and a good ear, no electronics can help here

Correct azimuth adjustment (via Foz) give jaw dropping results as to the mirror (or similar) method.  Rock stable imaging, wide soundstage, etc.

" @mb1audio02 -- unfortunately you’re plain wrong when it comes to measuring azimuth using a test tone and whatever instruments you choose. As Joel notes in the piece I linked to crosstalk is not consistent with frequency and unless you have the time and patience to measure at multiple frequencies setting by ear will give the best results"

You may want to actually ready my posts first before telling me what I said in them. I have no idea what method you are referring to. But I can tell you that Brooks Berdan showed me this method years ago, and that's good enough for me. No offense to Victor, but I'll call him if I need help building an amp.  

Don't bother trying to bait me into a senseless argument on this. I'm not responding to it. And yes, I understand the first thing you'll say is that if I don't respond, I'm wrong and that I'll lose credibility in the AG community. Believe me when I tell you I'm perfectly OK with that.