Standard Pack = 1 piece(s). Center Height = 165 mm (6-2/5 inch) ; Feed Per Division = .02 mm ; Maximum Swing Distance = +/-20 mm (+/-0.8 inch) ; Maximum Translation of Feed = 20 mm (0.8 inch) ; Maximum Wheel Size = 200 mm (8 inch) ; Measuring Diameter = 10 mm (0.4 inch) ;