I start with saying that I am aware of the fact that this has been discussed here before, more then once.
When I measure girth my unit is 5.1 inch just below the head and it gets thicker and thicker moving to the base. It doesn’t get much thicker looking from above but it get thicker on the side under, towards the floor. Right at the base and close to the balls it is 6.3 inch thick. So smallest girth is 5.1 and biggest is 6.3, is it right to say that my average girth is 5.7 inch? It feels kind of wrong since it‘s only 5.1 below the head.
And a question about measuring length. If I sit down and measure is that a valid measurement? I have a hard time keeping an erection when I am about to measure. It‘s easier to do if I sit down, maybe watch some porn and then take the ruler and measure. If I stand up I loose my erection if I put a ruler next to my dick. I don’t know if there is any difference in the measurements. They are often the same, sometimes it‘s a little bit bigger when I sit down but the difference is only 0.1 inch or so. I believe it‘s because I get a better erection sitting down.