  We study pure 2D Euclidean quantum gravity with $R^2$ interaction on
spherical lattices, employing Regge's formulation. We attempt to measure the
string susceptibility exponent $\gamma_{\rm str}$ by using a finite-size
scaling Ansatz in the expectation value of $R^2$. To check on effects of the
path integral measure we investigate two scale invariant measures, the
"computer" measure $dl/l$ and the Misner measure $dl/\sqrt A$.
