Sorry!There is no tool from Graham regarding antiskate.But,having set up Grahams,from the 1.5/2.0 to 2.2's(alot) I can state with confidence that you can dismiss any doubts as to the antiskate accuracy of these arms,relating to Graham's instructions,and how they perform in real world conditions.Unless you want to go nuts,and dismantle common sense,in order to find miniscule geometric and technical flaws,which will have no real impact on what you are hearing.Some posters like to do this.I hope you do not.You would be better served listening to your records.
Best!
Best!