Not even close. Look at the ruler. It's pressed in, and close to the top of his penis and then it is angled down. Furthermore your eye is getting confused because of a concept called forced perspective. He's actually measuring about 9 bone pressed. It only looks like 12 because of the angle we're looking at it. It was the same thing when they filmed hobbits in LOTR. they were actually in the background of the shot, but the angle of perspective made them look like they were really short and in the foreground.
Nice try though.