Table 1.

The fitted radii of the two spheres and the distances between them.

Measurement No.	Radius1 (mm)	Radius2 (mm)	Distance (mm)
1	20.037	20.069	198.504
2	20.016	20.034	198.512
3	20.043	20.036	198.532
4	19.995	20.076	198.472
5	20.039	20.020	198.558
6	20.054	20.097	198.546
7	20.018	20.053	198.529
8	19.996	20.032	198.550
9	20.042	20.081	198.481
10	20.064	20.094	198.553
Average	20.0304	20.0592	198.523