Fender to dash rods: 27" measured from where?

[tkeahi]

I've decided to ruin my whole week by trying to adjust the hood and fenders on my 52 truck. I'm trying to follow the instructions here:

http://www.stovebolt.com/techtips/bo...alignment.html

...but can't even get past step 2, which says:

"Check and adjust fender skirt to dash brace rods. Measurements should be taken from center of bolt head to edge or brackets: Left side 27 1/4 inches. The right side should be 27 inches."

I have two bolts at the firewall side of each rod and a brace /two nuts at the fender side.

Which bolt am I measuring from?

Which edge of the bracket am I measuring to?

Attached pic is not my truck, just one I found and marked up in paint.

Thanks!