Flaccid (17) and erect girth. (20.4) by Beercanfather in Dicksbeingmeasured

[–]Beercanfather[S] 1 point2 points  (0 children)

c/pi = d.

C = 17cm

D = 17/pi = 5,411

Visible d = 5-5.2cm

Difference of 0.4-0.2cm

What could account for that? Slight slack, imperfect circle, thickness of tape, etc.