Characteristics |
American ANSI Y14.5 |
Canadian CSA B78.2 / ISO 1101 |
Straightness |
![](/Images/straightness.jpg) |
Same |
Flatness |
![](images/flatness.jpg) |
Same |
Roundness (circularity) |
![](images/roundness.jpg) |
Same |
Cylindricity |
![](images/cylindricity.jpg) |
Same |
Profile of a line |
![](images/profile_line.jpg) |
Same |
Profile of a surface |
![](images/profile_surface.jpg) |
Same |
Parallelism |
![](images/parallelism.jpg) |
Same |
Perpendicularity (squareness) |
![](images/perpendicularity.jpg) |
Same |
Angularity |
![](images/angularity.jpg) |
Same |
Position |
![](images/position.jpg) |
Same |
Concentricity (coaxiality) |
![](images/concentricity.jpg) |
Same |
Symmetry |
![](images/symmetry.jpg) |
Same |
Maximum material condition |
![](images/max_material.jpg) |
Same |
Diameter |
![](images/diameter.jpg) |
Same |
Circular runout |
![](images/circular_runout.jpg) |
Same |
Total runout |
![](images/total_runout.jpg) |
Same |
Datum feature |
![](images/datum_feature.jpg) |
![](images/datum_feature_canada.jpg) |
Basic dimension |
![](images/dimension.jpg) |
Same |
Regardless of feature size |
![](images/regardless_of_size.jpg) |
Same |
Projected tolerance zone |
![](images/projected_tolerance.jpg) |
Same |
Datum target |
![](images/datum_target.jpg) |
Same |