Wes wrote:
[EDIT]

That is a run out figure at a distance. What we don't know is what kinds of errors caused
that amount of run out. Are the jaws and jaw body made at the correct angles to hold a
drill parallel to the centerline of the chuck or is their angular runout? It would make a difference on how you extrapolate the numbers. I
assume it is a mix of both but what is the bias?
--
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." Dick Anthony Heller