Characteristics |
American ANSI Y14.5 |
Canadian CSA B78.2 / ISO 1101 |
Straightness |
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Same |
Flatness |
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Same |
Roundness (circularity) |
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Same |
Cylindricity |
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Same |
Profile of a line |
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Same |
Profile of a surface |
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Same |
Parallelism |
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Same |
Perpendicularity (squareness) |
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Same |
Angularity |
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Same |
Position |
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Same |
Concentricity (coaxiality) |
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Same |
Symmetry |
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Same |
Maximum material condition |
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Same |
Diameter |
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Same |
Circular runout |
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Same |
Total runout |
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Same |
Datum feature |
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Basic dimension |
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Same |
Regardless of feature size |
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Same |
Projected tolerance zone |
 |
Same |
Datum target |
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Same |