Specification (mm) | Flatness of working surface | Parallelism between V slot & bottom surface | Parallelism between V slot & side surface | Symmetry between V slot & side surface | Squareness between V slot & bottom surface | Squareness between V slot & bottom surface | Height difference of the V slot within a matched pair |
| Precision grade (μm) |
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0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 |
FM40x90° | 1 | 2 | 3 | 6 | 3 | 6 | 5 | 10 | 5 | 5 | 3 | 6 | 4 | 6 |
FM63x90° | 2 | 3 | 4 | 8 | 4 | 8 | 8 | 16 | 8 | 8 | 4 | 8 | 5 | 10 |
FM100x90° | 2 | 4 | 4 | 8 | 4 | 8 | 8 | 16 | 8 | 8 | 4 | 8 | 5 | 10 |
FM160x90° | 2.5 | 5 | 5 | 10 | 5 | 10 | 10 | 20 | 10 | 10 | 5 | 10 | 6 | 12 |
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◇ For measurements of rotational parts of coaxiality, roundness, symmetry, pluse volume.
