paper about openrator, specification and uncertainty

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Specifications, operators and uncertainties
Dr. Henrik S. Nielsen
HN Metrology Consulting, Inc.
10219 Coral Reef Way
Indianapolis, IN 46256 USA
hsnielsen@HN-Metrology.com
Abstract: ISO/TS17450-2:2002 “Geometrical product specifications (GPS) – General Concepts – Part 2: Basic tenets, specifications, operators and uncertainties” is a new technical specification published by ISO TC 213 “Dimensional and geometrical product
specifications and verification”. This document defines a number of new concepts that the potential of revolutionizing how we think about specification and verification. It enhances the specification language by defining specifications as ordered sets of operations, a much richer language than the simplistic notion of tolerance zones.
Additionally, it expands the concept of uncertainty from being something measurement to being the universal currency for quantifying ambiguity in requirements, specifications and verifications.
Keywords: specification, operator, uncertainty, geometry, ISO TC 213