The speeds and feeds should be readable at least:
- Vitesse de coupe: Surface speed, m/min
- Diamètre de coupe de l’outil: Cutting diameter, mm
- Avance par dent: Feed per tooth, mm/tooth
The symbols he uses seem to be the same everywhere as well:
- Vc: surface speed
- fz: feed per tooth
- vf: feed rate
- n: RPM
- d: cutting diameter
- Z: number of teeth
I can’t make sense of everything but this at least I figured out 