If you're using 3D procedural patterns, the UV scale does not come into the calculation at all. For example, when I use a Turbulence node to make the small-scale bumpiness of tiny skin wrinkles, the UV mapping has nothing whatsoever to say about how that's going to look on the figure.

As for patterns that are driven by the UV mapping (such as when using an image for a height map) there is no such answer. The UV mapping is not only different for each figure's "islands" (look at the arm/leg map to see what I mean) but it's different within each island. For example, the V4 leg mapping is so distorted that if you were to put a circle on the knee, it looks nothing like that on the thigh or buttock. It's impossible to even specify the scale in a situation like that.

Your question is like asking "How high is Colorado." I can give you an average, but if you try to blindly land a plane at that height you're very unlikely to find your wheels just touching the ground instead of being inside a mountain or still 1000 feet above the ground.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)