1. Grid line specifications on the workbench surface: 50x50±0.05mm; 1mm scale lines on the two adjacent sides of the workbench in the X and Y directions
2. Aperture and accuracy: φ16.16±0.03mm
3. Hole spacing: 50±0.03mm
4. Flatness: 0.1mm/m2
5. Verticality: 0.1mm/200mm
6. Parallelism: 0.1mm/1000mm
Parallelism and verticality (adjacent sides): 0.1/1000mm
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