Table 2. Coordinate of feature points.
| Feature point | P0 | P1 | P2 | P3 |
|---|---|---|---|---|
| Coordinate(mm) | (0.0,60.0,0.0) | (-50.0, -26.603,0.0) | (50, -26.603,0.0) | (0.0,0.0,25.0) |
The coordinate is the center of the hole.
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