The size of the circles and the distance between the balls are stated as follows: （1）Outer circle of the rings ：Radius 2/100h（2%） （2）Inner circle of the rings ：Radius 1/100h（1%） （3）The distance between the balls: Horizontal direction 315KHz（approx. 2/25h） Vertical direction 900Hz （approx. 1/14h）
