This part of ISO 12781 defines the terms and concepts related to flatness of individual complete integral
features only.
BS EN ISO 12781-1:2011 Referenced Document
ISO 14660-1:1999 Geometrical Product Specifications (GPS) - Geometrical features - Part 1: General terms and definitions
ISO 14660-2:1999 Geometrical Product Specifications (GPS) - Geometrical features - Part 2: Extracted median line of a cylinder and a cone, extracted median surface, local size of an extracted feature
ISO 17450-1 Geometrical product specifications (GPS) - General concepts - Part 1: Model for geometrical specification and verification*, 2011-12-01 Update
BS EN ISO 12781-1:2011 history
2011BS EN ISO 12781-1:2011 Geometrical product specifications (GPS). Flatness. Vocabulary and parameters of flatness