Lonestoner,
Sorry I wasn't clear . As the wing is semi symmetrical this is a bit tricky. If you place one wing on a flat surface ( table ) on the main spar which in my wing is 3 1/2 inches back from the leading edge, the wing tip of the high wing measured from the table to the centre of the wing tip ( meaning to the balsa tip that atteches to the last rib to form the rounded wing tip again 3 1/2 inches back from the leading edge ) is 3 inches. I doubt that this is critical and the model may perform some manoeuvres better with a little less dihedral as Tom has done. Certainly I wouldn't put in more than 3 inches.
Tim