| Code | Accuracy | Parallelism | Squareness | Height difference of a matched pair | Size (L×W×H) |
|---|---|---|---|---|---|
| 6531-25 | 5µm | 3µm | 5µm/25mm | 5µm | 75×50×25mm |
| 6531-251 | 5µm | 3µm | 5µm/25mm | 5µm | 75×50×25mm |


Pairs of matched blocks for positioning and set-up
Hardness HRC60±2
| Code | Accuracy | Parallelism | Squareness | Height difference of a matched pair | Size (L×W×H) |
|---|---|---|---|---|---|
| 6531-25 | 5µm | 3µm | 5µm/25mm | 5µm | 75×50×25mm |
| 6531-251 | 5µm | 3µm | 5µm/25mm | 5µm | 75×50×25mm |
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