ISO 25378:2011 - $209.00   BUY NOW

Geometrical product specifications (GPS) - Characteristics and conditions - Definitions

ISO 25378:2011 Publication Description:

ISO 25378:2011 defines general terms for geometrical specifications, characteristics and conditions. These definitions are based on concepts developed in ISO 17450-1 and ISO 22432 and they are given by using a mathematical description based on Annex B of ISO 17450-1:2011.

ISO 25378:2011 is not intended for industrial use as such among designers, but is aimed to serve as the "road map" mapping out the requirements based on geometrical features, thus enabling future standardization for industry and software makers in a consistent manner.

ISO 25378:2011 defines general types of geometrical characteristics and conditions which can be used in GPS. These descriptions are applicable to

  • a workpiece,
  • an assembly,
  • a population of workpieces, and
  • a population of assemblies.

These definitions are based on concepts of operators and the duality principle contained in ISO 17450-1 and ISO/TS 17450-2 and on the description of types of geometrical features defined in ISO 22432.

Conceptually, these specification operators can be used as specification operators or as verification operators (duality principle).

ISO 25378:2011 is not intended to define GPS specifications, symbology or other types of expression.

International Classification for Standards (ICS)

ICS Classification Field ICS Field Sub-Group and Number
ICS-17-Metrology ICS Geometrical Product Specification (17.040.40)

ICS Related Standards

Cart Document Number Document Title
$103.00 ISO 14253-1:2013 Geometrical product specifications (GPS) - Inspection by measurement of workpieces and measuring equipment - Part 1: Decision rules for proving conformity or nonconformity with specifications
$209.00 ISO 14253-2:2011 Geometrical product specifications (GPS) - Inspection by measurement of workpieces and measuring equipment - Part 2: Guidance for the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and in product verification
$68.00 ISO 14253-3:2011 Geometrical product specifications (GPS) - Inspection by measurement of workpieces and measuring equipment - Part 3: Guidelines for achieving agreements on measurement uncertainty statements
$103.00 ISO 14253-5:2015 Geometrical product specifications (GPS) - Inspection by measurement of workpieces and measuring equipment - Part 5: Uncertainty in verification testing of indicating measuring instruments
$103.00 ISO/TR 14253-6:2012 Geometrical product specifications (GPS) - Inspection by measurement of workpieces and measuring equipment - Part 6: Generalized decision rules for the acceptance and rejection of instruments and workpieces
$103.00 ISO 14406:2010 Geometrical product specifications (GPS) - Extraction
$103.00 ISO 14638:2015 Geometrical product specifications (GPS) - Matrix model
$209.00 ISO 17450-1:2011 Geometrical product specifications (GPS) - General concepts - Part 1: Model for geometrical specification and verification
$103.00 ISO 17450-2:2012 Geometrical product specifications (GPS) - General concepts - Part 2: Basic tenets, specifications, operators, uncertainties and ambiguities
$138.00 ISO 17450-3:2016 Geometrical product specifications (GPS) - General concepts - Part 3: Toleranced features
$103.00 ISO/TS 17863:2013 Geometrical product specification (GPS) - Geometrical tolerancing of moveable assemblies
$103.00 ISO 18391:2016 Geometrical product specifications (GPS) - Population specification
$185.00 ISO 22432:2011 Geometrical product specifications (GPS) - Features utilized in specification and verification