• Nov 15, 2025 Iso Geometrical Tolerancing Reference Guide Banyalex -----------|----------------------------------------| | ⏀ | Circularity (roundness) | Ensuring a hole is perfectly round | | ⏁ | Flatness | Controlling flatness of a surface | | ⊥ | Perpendicularity | Ensuring a face is perpendicular to a datum | 2 | ∠ By Mr. Blaise Terry
