20 Degrees C -- A Short History of the Standard Re

Home > Diane Publishing Books >

20 Degrees C -- A Short History of the Standard Reference Temperature for Industrial Dimensional Measurements: A Reprint from the “Journal of Research of the NIST

One of the basic principles of dimensional metrolo

Our Price: $15.00

By Ted Doiron (au)
Year: 2007
Pages: 24
Binding Paperback

Product Code: 1422314685

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 degrees 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, & the effort by the Nat. Bureau of Standards to bring the U.S. to the eventual world standard. Illustrations.

Share your knowledge of this product with other customers... Be the first to write a review