: The standard does not account for material properties or the specific manufacturing process, which can influence the achievable tolerances.
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Extra credit (up to 5 marks)
Geometrical tolerances for features (like flatness, straightness, and symmetry).
Deviations range from 0.4 mm (up to 100 mm length) to 1.0 mm (up to 3000 mm). general tolerance iso 2768-mk
Here is the real-world data for ISO 2768-mk. Use this to decide if your design needs tighter tolerances.
For class "k", the general tolerance for circular run-out is 0.2 mm . : The standard does not account for material
The "K" designation means the drawing adheres to the geometric tolerance class.
Section B — Table interpretation and application (20 marks) (Use the ISO 2768‑m and ISO 2768‑k tables below — simplified values given for the exam.) Here is the real-world data for ISO 2768-mk
To make this standard legally binding for a project, it must be explicitly cited on the technical drawing. This is usually done inside or right next to the title block using the following text: When to Override the Standard
Section A