Guys lets say I have a 3/8 hole that I need to line up with chuck on mill.Only way I know how to get the hole lined up with my drill chuck on mill is to use a Pin Gage keep moving X&Y till the pin fits.I search Youtube but really did not find what I was looking for probably due to I did not know what to call this problem.But my question is I have a edge finder that comes to a point,is this edge finder for these purpose to find centers?Any Youtubes out there that could explain how to find centers?