Quote Originally Posted by stirling View Post
Not accurate my be a poor choice of words
Probably, I was never very good in English lessons...

I guess all you have to do is change the probe tip to a simple cylinder that's at least as long as the height of the piece. The only issue is as the cylinder pivots about the top it will give a slightly different reading depending on the height. Easily compensated for by just drawing a contour round the path generated (or using a much longer cylinder) and accepting it may probe a little of the bed.

Alternatively you could probe the edge at different heights then generate the path from the limits of those, but that's going to take a while.