Part 1 specifies four tolerance classes. The designer selects one based on the functional requirements of the part.
📐 Controls the 90-degree angle between surfaces. 🎯 Symmetry: Ensures features are centered correctly. 🔄 Circular Run-out: Limits wobbling in rotating parts. Table 2: Flatness and Straightness (mm) Range (mm) 100 to 300 Why Use an ISO 2768 PDF? Iso 2768 General Tolerances Pdf
It only applies if you explicitly state it on your technical drawing. Part 1 specifies four tolerance classes
For a visual summary of the tolerance tables, you can view this General Tolerance Guide ZEISS Quality Forum specific numerical values Iso 2768 General Tolerances Pdf