Wouldn't a frozen dot suggest that the deck spinning at a perfect constant speed? I mean Technics are accurate enough, but what perhaps the tho whole relation between torque, power, balance and pitch accuracy is at moment where its at a good snyc?
Yeh, I think it would - you're right, in fact when the dots freezes the little legend beside the strobe light tells you that it's spinning at the exact quartz reference frequency for that particular dot. So when the fattest dot freezes, you're at exactly 33.3 or 45 rpm.

So, for example, when you push it a little faster - and there is a bit of a knack to it that I couldn't hope to explain in text, but would take two seconds to show you in front of a deck - it's like it "grabs" the true reference frequency for the briefest of moments. For some reason, if you're pretty accurate already, this will just nail it and the sounds just lock together.

Of course, it'll start slowly going out again after that - so I use this in conjunction with pitch control to home in very accurately to where the pitch lies, "re-locking" it as necessary. But once you're used to it and have done it a while, you instinctively know, just by looking, which way it needs to go to "lock"and can do it without even using headphones.

You sound like you've got the idea though - let me know how you get on.