Question about penis measuring?

I have a question about what size my penis is. My ruler is bendable so it can count for the curve, and when i measure the non bone pressed method without counting for curve, it is 5.6 inches. If I do the non bone pressed method WITH counting the curve, it's 5.8-5.9 inches. If I do the bone pressed method with counting the curve it is 6.1 inches. Which measurement should I take? I've heard the bone pressed is the most accurate and that you should always count the curve.