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 17450-1:2011 Geometrical product specifications (GPS) -- General concepts -- Part 1: Model for geometrical specification and verification
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 17450-1:2011 Geometrical product specifications (GPS) -- General concepts -- Part 1: Model for geometrical specification and verification