I was under the impression that they used Stukely's drawing as a reference for the angle of the lean - the stone had supposedly incurred.... hehe

What a crazy world we live in... maybe it was fate - if there is such a thing - dug up one of the biggest stones in England on a hunch - fantastic.

get the 'trators in
to underpin
the leaning stone
of Avebury cove

Dig down to find
thoughts of past minds
just to see
the eye of Stukely.