| Symbol | dCHα2 |
|---|---|
| Unit | mm |
| Attribute-ID | diameter_where_profile_slope_starts |
| Numeric ID | 16978 |
| Value Type | PMTechValue |
The diameter at which the profile slope modification begins. Corresponds to the profile control point C_f from ISO 1328 (2012).
The usable root circle diameter is often used.