Geometrical product specifications (GPS) - Flatness - Part 1: Vocabulary and parameters of flatness (ISO/TS 12781-1:2003); German version CEN ISO/TS 12781-1:2007
Geometrical Product Specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out (ISO 1101:2004); German version EN ISO 1101:2005— 66 стр.
Geometrical product specifications (GPS) - Flatness - Part 1: Vocabulary and parameters of flatness (ISO 12781-1:2011); German version EN ISO 12781-1:2011— 20 стр.