In a message dated 7/19/2006 11:08:38 P.M. Eastern Daylight Time, rgreen@insightbb.com writes: Obviously, the ball tip is less likely to damage material it comes in contact with, both because it requires less force to insert and because it is a smooth spherical surface rather than a sharp pointed one. Scot and Rich, I have never damaged a stone, nor have I used a ball tipped probe,but if you think you may not have the patience,nor the finesse with the point without causing damage, (And some people are a little crude) then I recommend by all means the probe with the ball on the end for safety's sake. We all must do whatever it takes to prevent ANY damage to the stones. I have observed more damage in digging the stone up with shovel marks, than I have in the probing. If I make any contact at all, I immediately stop and proceed to dig with a soft plastic object I have for this purpose. Just being broken is enough damage, more is not needed I personally appreciate all suggestions, and do not ignore any. Jack E. Briles Floyd Co. _jackbriles@aol.com_ (mailto:jackbriles@aol.com)