This part of ISO 14405 introduces the default linear size specification operator (see ISO 17450-2) for linear size measures and defines a number of special linear size specification operators for size measure elements, e.g. E.g. "cylinder", "sphere", "torus"1) "circle", "two parallel opposing planes" or "two parallel opposing straight lines". It also establishes the specification modifiers and drawing references for these linear size dimensions. This part of ISO 14405 covers the following linear size measures: a) local size measure:
——two-point size measure;
——spherical size measure;
——cross-sectional size measure;
——Partial area size measure; b) global size measure;
——direct global linear size measure;
——Least squares size measure;
——largest recorded size;
——smallest circumscribed size measurement;
——Minimax size measurement;
——indirect global linear size measure; c) calculated size measure;
——circumferential diameter;
——area-related diameter;
——volume-related diameter; 1) A torus is a size dimension element when its directrix diameter is fixed. d) ranking size measure;
——largest size measurement;
——smallest size measurement;
——average of the size measure;
——median value of the size measure;
——Average of the largest and smallest dimensions;
——Range of size measurements;
——Standard deviation of size measurements. This part of ISO 14405 specifies linear size tolerances for the following;
——a + and/or - limit deviation (e.g. 0/-0.019);
——an upper limit of size (ULS) and/or a lower limit of size (LLS) (e.g. 15.2 max., 12 min. or 30.2/30.181);
——an ISO tolerance code according to ISO 286-1 (e.g. 10 h6); with or without modifier(s). This part of ISO 14405 provides a number of tools to express different types of size dimensional characteristics. It does not contain any information about the relationship between a function or use and a size characteristic.
EN ISO 14405-1:2016 Referenced Document
ISO 10579:2010 Geometrical product specifications (GPS) - Dimensioning and tolerancing - Non-rigid parts
ISO 1101:2012 Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, location and run-out
ISO 14638:2015 Geometrical product specifications (GPS) - Matrix model
ISO 17450-1:2011 Geometrical product specifications (GPS) - General concepts - Part 1: Model for geometrical specification and verification
ISO 17450-2:2012 Geometrical product specifications (GPS) - General concepts - Part 2: Basic tenets, specifications, operators, uncertainties and ambiguities
ISO 17450-3:2016 Geometrical product specifications (GPS) - General concepts - Part 3: Toleranced features
ISO 2768-1:1989 General tolerances; part 1: tolerances for linear and angular dimensions without individual tolerance indications
ISO 286-1:2010 Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes - Part 1: Basis of tolerances, deviations and fits
ISO 3098-2:2000 Technical product documentation - Lettering - Part 2: Latin alphabet, numerals and marks
ISO 492:2014 Rolling bearings - Radial bearings - Dimensional and geometrical tolerances
ISO 8015:2011 Geometrical product specifications (GPS) - Fundamentals - Concepts, principles and rules
ISO 81714-1:2010 Design of graphical symbols for use in the technical documentation of products - Part 1: Basic rules