Linear dimensions for external radii and chamfer heights (usually non-critical features) have a separate, slightly coarser table.
Uses the designation "m" to represent the medium tolerance class. It covers dimensions like lengths, diameters, radii, and angles. iso 2768 medium tolerance
The permissible deviation in the medium class depends on the of the feature. As the part gets larger, the allowable "wiggle room" increases. Nominal Length (mm) Medium (m) Tolerance (mm) over 3 to 6 over 6 to 30 over 30 to 120 over 120 to 400 over 400 to 1000 over 1000 to 2000 over 2000 to 4000 General Tolerance - ISO 2768 1 & 2 - ZEISS Quality Forum Linear dimensions for external radii and chamfer heights
Below is a comprehensive reference guide. This includes the official tolerance tables, explanations of tolerance classes, and practical application notes. This text is designed to be printed or saved as a document for your reference. The permissible deviation in the medium class depends
This guide gives you everything needed to apply ISO 2768-m correctly on drawings and interpret it during manufacturing or inspection.