"ISO 2768-1 m / ISO 2768-2 f"
(e.g., lengths, diameters, radii, and angles). It uses four tolerance classes: (coarse), and (very coarse). ISO 2768-2 geometrical tolerances iso 2768 general tolerances pdf exclusive
Typically used for rough manufacturing processes. "ISO 2768-1 m / ISO 2768-2 f" (e