General Tolerances for Linear and Angular Dimensions According to ISO 2768-mH: Interpretation, Application, and Industrial Implications
For class m, the deviation is ±0.5° or ±30 minutes for nominal lengths ≤120 mm, and ±0°20' per 100 mm length for larger features. iso 2768 m h
| Nominal Length Range (mm) | Straightness / Flatness (mm) – H | |---------------------------|----------------------------------| | Up to 10 | 0.02 | | >10 to 30 | 0.05 | | >30 to 100 | 0.1 | | >100 to 300 | 0.2 | | >300 to 1000 | 0.3 | | >1000 to 3000 | 0.4 | and Industrial Implications For class m