The fitment used with bench center is extremely useful in finding pcd runout in almost any type of gear. It has X - Y and radial movement that together with ball pin fitted on the opposite side of dial indicator gives the exact deviation of pcd error.

The unit is universal so any gear viz, spur gear, bevel gear, spline can be checked.

The ball pins available from 3 mm to 10 mm or tailor made for any special diameter.