Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from webmaster@ceesi.com.

Title: The Modern Proving Room
Author: P. L. Pairchild
Source: 1938 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1938
Abstract: The international Bureau of Weights and Measure near Paris have preserved in their vaults two lines on a metal bar, the distance which is known as a metre. A very accurate copy of this bar is deposited in the United States Bureau of Standards in Washington DC and since the length of this material changes slightly at the temperature of melting ice. Here we have a legal standard which can be referred to at any time should there be the slightly doubt as to the accuracy of existing standards of this linear unit of measure.

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.