Any direct references to other documents are identified by an immediate citation. All such quotations are identified by italicized type. Textual references are included throughout this standard which are direct quotations from ASME Y14.5m-1994. While the general format of this standard parallels that of ASME Y14.5m-1994, the latter document should be consulted for practices relating to dimensioning and tolerancing for use on engineering drawings and in related documentation. This standard presents a mathematical definition of geometrical dimensioning and tolerancing (GD&T)consistent with the principles and practices of ASME Y14.5m-1994, enabling determination of actual values.