Iso 13715 — Din

| Symbol Element | Meaning | | :--- | :--- | | | The edge in question. | | Dash-dotted line (leader) | Connects the note to the edge. | | "Max" or "Min" | Indicates the upper or lower limit of the edge break. | | Number (e.g., 0.4) | The size of the edge break (radius or chamfer dimension). | | Arrow (inward/outward) | Indicates the direction of the break (burr side). |

The basic symbol consists of two lines of unequal length meeting at an angle (approx. 60°). This symbol points to the edge being defined. din iso 13715

is a critical international standard for mechanical engineering that defines how to specify the state of edges with "undefined shapes" in technical product documentation. While CAD models represent parts with perfect geometric edges, real-world manufacturing processes like milling, casting, or stamping inevitably leave burrs (excess material) or undercuts (removed material). | Symbol Element | Meaning | | :---

"Break all sharp edges." This is subjective. Does "break" mean 0.1 mm or 1.0 mm? It depends on who is reading. | | Number (e