the chart lists normal and premium values for flatness, straightness and roundness over four dimension ranges.
Flatness, straightness and roundness
| Dimension (mm) | Normal (mm) | Premium (mm) |
|---|---|---|
| 0–25 | 0.2 | 0.1 |
| 25–50 | 0.4 | 0.2 |
| 50–100 | 0.6 | 0.3 |
| 100–150 | 0.8 | 0.4 |
Design notes
- Values reproduce the chart without adding a ± sign.
- the guide provides no rows above 150 mm. Confirm the required control and datum scheme on the approved drawing.