Elias pulled up his revised drawing on the projector. The optical mount looked the same, but the title block was different.
The prototype was a disaster.
| Standard | Region | Notes | |----------|--------|-------| | ISO 2768 | International | Most common general tolerance | | DIN 7168 | Germany (obsolete) | Replaced by ISO 2768 | | ANSI B4.1 / B4.2 | USA | Uses class numbers (e.g., 4, 5, 6) or block tolerances | | GB/T 1804 | China | Equivalent to ISO 2768 | iso 2768
Henderson studied the screen for a long moment. "You’re trusting the standard to handle the noise so you can focus on the signal." Elias pulled up his revised drawing on the projector
The scope of ISO 2768 includes:
The permissible deviations for linear dimensions (such as external/internal sizes, distances, and radii) are set based on the chosen tolerance class (f, m, c, v) and the nominal size range. For example, a 10 mm hole might have a looser tolerance than a 50 mm hole within the same "medium" class, as defined in the standard tables. | Standard | Region | Notes | |----------|--------|-------|