A scale of 1-10 for rating girls. Girls will tend to acheieve a higher rating than usual on the Dale Scale, usually of +2. So a girl who is a 6 on a 'normal' scale, would achieve an 8 on the Dale Scale. Approximately, 90% of girls will acheive at least an 8.
Dale: "Oooh hello, check out the girl on the left!"
Friend: "Dale Scale?"
Dale: "Easy 9"