I'm looking for the measurement from the crest of the main bodyline to the crest of the lower bodyline.  The measurement needs to be taken with the tape measure perpendicular to the bodylines so that one end is right at the wheel well lip and the other end is right at the front of the quarter panel. The main bodyline has lost its definition and I really can't tell where the center line is anymore.

Thanks

 

Is this what you wanted?

15 5/8" "cut an inch"

So 14 5/8" x 25.4 = 371.5mm

The level is not "level" but extended along the body line