Mk Pdf ~upd~ - Tolerance Iso 2768

The "K" in mK defines the geometrical tolerances—controlling features like straightness, flatness, perpendicularity, and symmetry without having to mark every single feature on the drawing. Table: General Geometrical Tolerances (Class K) Range (mm) Straightness/Flatness Perpendicularity Over 10 to 30 Over 30 to 100 Over 100 to 300 5. Benefits of Using ISO 2768-mK