20 °C—A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements

One of the basic principles of dimensional metrology is that a part dimension changes with temperature because of thermal expansion. Since 1931 industrial lengths have been defined as the size at 20 °C. This paper discusses the variety of standard temperatures that were in use before that date, the...

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Detalles Bibliográficos
Autor principal: Doiron, Ted
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2007
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4654601/
https://www.ncbi.nlm.nih.gov/pubmed/27110451
http://dx.doi.org/10.6028/jres.112.001
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author Doiron, Ted
author_facet Doiron, Ted
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description One of the basic principles of dimensional metrology is that a part dimension changes with temperature because of thermal expansion. Since 1931 industrial lengths have been defined as the size at 20 °C. This paper discusses the variety of standard temperatures that were in use before that date, the efforts of C.E. Johansson to meet these variations, and the effort by the National Bureau of Standards to bring the United States to the eventual world standard.
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spelling pubmed-46546012016-04-22 20 °C—A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements Doiron, Ted J Res Natl Inst Stand Technol Article One of the basic principles of dimensional metrology is that a part dimension changes with temperature because of thermal expansion. Since 1931 industrial lengths have been defined as the size at 20 °C. This paper discusses the variety of standard temperatures that were in use before that date, the efforts of C.E. Johansson to meet these variations, and the effort by the National Bureau of Standards to bring the United States to the eventual world standard. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 2007 2007-02-01 /pmc/articles/PMC4654601/ /pubmed/27110451 http://dx.doi.org/10.6028/jres.112.001 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Doiron, Ted
20 °C—A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements
title 20 °C—A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements
title_full 20 °C—A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements
title_fullStr 20 °C—A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements
title_full_unstemmed 20 °C—A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements
title_short 20 °C—A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements
title_sort 20 °c—a short history of the standard reference temperature for industrial dimensional measurements
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4654601/
https://www.ncbi.nlm.nih.gov/pubmed/27110451
http://dx.doi.org/10.6028/jres.112.001
work_keys_str_mv AT doironted 20cashorthistoryofthestandardreferencetemperatureforindustrialdimensionalmeasurements

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