It's not how long you make it, but how you make it long.... dl Don Chichester wrote: > When we say a stylus has a 3 mil tip (.003 inches) what are we talking about? The _diameter_ of the 'ball' at the tip, or the _radius_ of that 'ball? (By 'ball" I mean the rounded end? Always has puzzled me. > > > > Don (not too sharp) Chichester > > _____________________