thanks. I will do that. I use the RCBS mic and it works for me. I've not much experience with anything else but this tool works fine for me.
I applied a reasonably consistent tension on the screw that applies pressure to the collapsable tool and have been able to get consistent results after 5 tries, using it inconjunciton with the hornady comparator tool for the calipers. The way I see it, any way you do it, its a touchy-feely kind of thing..
Woods, thanks for the pics. I never quite understood how to implement that method . seems like it works good for you.. again thanks all this insight is very helpful.. happy hunting.