  We show that the elastic differential $pp$ cross-section has a unique
universal property that the ratio of bump-to-dip position is constant from the
energies of the ISR to the LHC. We explore this property to compare Geometric
Scaling present at the ISR with the recently proposed scaling law at the LHC.
We argue that at the LHC, within present experimental uncertainties, there is
fact a family of scaling laws.
