Downloaded from https://www.everyspec.com APPENDIX C MIL-STD-31000A C.7.9.4 Incorrect use of basic dimensions Basic dimensions describe the theoretically accurate size, profile, orientation, or location of a feature or datum target. The following are examples of incorrect uses of basic dimensions: Incorrect use of basic box around a dimension with a tolerance. Correct display of radius dimension with a tolerance. A plus/minus tolerance should not be used on a dimension between two features. Correct use of a basic dimension to indicate the distance between a two features: a plane and a cylindrical hole. 127