Iso 2768 M H !!link!! Access

| Class | Linear (e.g., 30–120 mm) | Flatness (100 mm length) | Typical Application | |-------|--------------------------|--------------------------|---------------------| | f (fine) | ±0.15 mm | 0.05 mm | Precision instruments, watchmaking | | | ±0.3 mm | 0.1 mm | General machining | | c (coarse) | ±0.8 mm | 0.2 mm | Welded structures, rough castings | | v (very coarse) | ±1.5 mm | 0.5 mm | Mining equipment, heavy fabrication |

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

You're referring to the ISO 2768 standard, specifically the "m" and "H" tolerances. | Class | Linear (e