0.02mm distance by dial indicator or tighten while spinning wheel and back off until movement is felt then just slightly tighten.
I did not have a dial indicator but calculated approximately 10 degree turn of the nut yields 0.02mm. If I can talk standard threads, a nut with 12 threads per inch means turn the nut 12 revolutions and it moves 1 inch. Using math you get 0.02mm when you turn the nut ~10 degees.
I ended up using the "loosen until you feel play" and then slightly tighten. I did not know the actual nut movement but it was more the 10 degrees, maybe 15 to 20. I figued I might have had the wrong "just tight spot" when backing off the nut.
The big unanswered question is if the 0.02mm method is used does that mean the tire should feel loose when set properly? This would put it in direct conflict with the slight tighten after wheel just loose you hear about using.
So anyone who used a dial indicator feel for play when done?

1983 300SD, made cars feel good again
1995 Bonniville
1986 Ford 250 1 Ton plow truck
1980 Piper Warrior II, who needs a car.

Mark W