Phillips, S.
, Shakarji, C.
, Balsamo, A.
, Krystek, M.
and Morse, E.
(2016),
The 2016 revision of ISO 1 – Standard reference temperature for the specification of geometrical and dimensional properties, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/jres.121.026
(Accessed November 3, 2025)
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The 2016 revision of ISO 1 Standard reference temperature for the specification of geometrical and dimensional properties
Published
Author(s)
, , Alessandro Balsamo, Michael Krystek, Edward P. Morse
Abstract
This paper discusses the recently published 2016 (third edition) of ISO 1. While the value of the standard reference temperature remains unchanged at 20 C, definitions for the reference temperature and standard reference temperature are now included. This eliminates ambiguities associated with specifications at non-standard reference temperatures and allows, if needed, different reference temperatures to be associated with different properties of a workpiece. The relationship between ISO 1 and dimensional measurements is also discussed and clarified. The motivation for these changes is discussed and several of the issues debated during the revision process are presented for the benefit of future standard committees that might study this topic.Citation
Journal of Research (NIST JRES) -
Volume
121
NIST Pub Series
Pub Type
NIST Pubs
Download Paper
Keywords
ISO 1, Standard Reference Temperature, Thermal Expansion, CTE, Dimensional Metrology
Citation
Issues
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Created November 10, 2016, Updated November 10, 2018