I am really tired of people saying that only measuring top of the penis is accurate, because that is certainly not the case for me. As my name suggests, i have a strong upward curve on my member, and therefore it is extremely difficult to get a measurement from the top. therefore i measure on the underside, and i start the measurement at a reasonable place of course (in line where the penis starts from my stomach at the top) and not from my testicles). Every time i measure from the top, the tape measure/wire/whatever gets scrunched up and i lose some serious inches. As an experiment to see what i mean, measure your pointer finger as you point it straight. Now curl your finger and measure the outside, and underside.. big difference huh? My measurement on the outside is the same as if it was straight, but the inside measurement i lost 1/3 of its length trying to measure it. Now i guess i proved my point about the typical standard of measuring.