| Symbol | ΨFf |
|---|---|
| Unit | ° |
| Attribute-ID | tooth_thickness_half_angle_at_root_form_diameter |
| Numeric ID | 19242 |
| Value Type | PMTechValue |
The tooth thickness half angle at root form diameter ΨFf applies to the transverse plane and is calculated from DIN ISO 21771:2014-08 Chapter 4.7.2 Formula (40) together with Formula (41).