The Super Ball Bar (Dumbbell) Thing

The Super Ball Bar (Dumbbell) Thing  is a very fast dependable method of checking the interim performance of Coordinate Measuring Machines. It consist of two Ball Bars (Dumbbells) that are kinematically supported on a base ring. The two Ball Bar (Dumbbells) are indexed to eight preset measuring positions with the push of a button.  The Kinematic positions are set inside the base ring. An air pressure supply is needed.

See: Tech Data Sheet: CMM-15 Page 2