I read many articles on internet and visited even more sites that explain how to measure the erect penis girth... First you have to get an hard erection, maybe the hardest it can be, to measure it correctly..then measure the minimum girth,the midshaft girth and the base girth... write down every measure taken with the place where it's taken and then you can also average it to get an average value...
Could we know what's your minimum (and where), your maximum (and where) and the midshaft please?