In order to benefit fully from the hyperlinking between the documents, the reader is advised to download all JCGM documents presently available in one ZIP file.
The fundamental reference document is the Guide to the Expression of Uncertainty in Measurement (GUM):
Note: JCGM 100:2008 is also available in HTML form from the JCGM portal on ISO's website.
The JCGM Working Group 1 (JCGM-WG1) is producing a series of documents to accompany the GUM. The first three of these documents have been approved and are available for download as PDF files. Printed copies are available for purchase from ISO.
Software for Measurement Uncertainty Evaluation
This software has been developed to promote and support the use of the GUM and its supporting documents. It was written to provide the results presented in tables and figures contained within GUM Supplements 1 and 2. It can be used to help users learn about the methods for uncertainty evaluation described in the GUM and GUM Supplements 1 and 2, and to make their own implementations of these methods. No recommendation is made by JCGM regarding this or any other software for measurement uncertainty evaluation.