L4, L5 Gravity Wells

Good questions Chad!
Here are my two cents. Assumeing that we have launched a probe for the
purpose of mapping the L5 gravity gradient, my first question is how do
we measure the gravity gradient? I seem to remember that gravity
mapping of the moon used variations in the orbit of the probe to detect
variations in the density of the moon. Not much use when sitting in an
L5 location. My first design would be a tetrahedon of long spines and
use some sort of very sensative flex measurement.(I have got to get
spell checking back on this email tool.) Design of this probe would be
a good InnerTransit.org project.