Originally Posted by Twelvegauge
There is a thing called BPEL (bone pressed erect length) which you can push a ruler to your pelvic bone and measure there additionally there is NBPEL (bone pressed erect length) measurement where you just measure from the base of the shaft with no pressure. Typically people do both. And for your curve I would do slight tension since you said it was a slight thing.
Thanks Twelvegauge for the clarification. I can’t straight it out with slight tension, maybe it isn’t a slight curve or I have a quality erection.