The FeatureSizeType defines an arithmetic expression representing the relevant linear size of a feature. The author of any set of rules that uses feature size should provide a definition of feature size for each combination of feature type and characteristic covered by the rules. For example, for a cylindrical hole, the feature size for a diameter characteristic might be the diameter, for a length characteristic might be the length, and for a cylindricity characteristic might be the maximum distance between any two points on the cylinder. The units for size are the length units used in the file. |