Well, no matter to inscribe a circle into the square; the same circles above, resized to fit the square height show their Φ ratio at the height of the navel, with the upper circle's center to the point c (page 24), like the arms' radius ch!
Here the navel seems slightly displaced (the handy circle flattened, still under revision, from that navel might not match the right circumference); so it needs to be verified in alternative models. |
After all, it may be hard to argue about a centimeter up or down, that can vary with races, general characters, age as by the weight of abdomen and skin; the same to exactly reset a distorted multiple geometry.
However, over a lot of hand made models that I could examine, the Michelangelo's David seems the most reliable, the entire abdomen looks more realistic; I added too the dummy accurately manufactured for scientific use in acupuncture, both meeting our target… (PDF 5.7Mb) but perhaps not yet enough, as we're going to verify later.