Measuring with a ruler or a tape measure

I know some may say that it’s more acurate to measure with a ruler because of it’s rigidity. However, the tape measure can account for length that exists in the curvature of the shaft that the ruler will not reveal. Any thoughts?

I do not take the curve into consideration when I measure. This is because a girl is not going to straighten the curves of your penis THEN say your big or long or whatever. If I did straighten out my penis when I do measure, I will be bigger definitely.

It is far harder to be consistent measuring length with a tape. The actual numbers are not important; knowing you are growing is. A ruler is best for length, a tape for girth.

If you get hung up about numbers, just get a plain piece of straight wood and use that. Put an ink mark at your max length, then repeat once a month. I prefer doing this to using a ruler.