ISO Guide to Measurement Terms

The “VIM” or Vocabulary of Metrology is a technical dictionary defining such useful terms as: secondary measurement standard, transfer measurement standard, primary measurement standard, standard measurement uncertainty, traveling measurement device and many more useful definitions.
The book is available directly from the American National Standards Institute’s eStandards Store, which states:

“This Vocabulary is meant to be a common reference for scientists and engineers, as well as teachers and practitioners, involved in planning or performing measurements, irrespective of the level of measurement uncertainty and irrespective of the field of application. It is also meant to be a reference for governmental and inter-governmental bodies, trade associations, accredi­tation bodies, regulators and professional societies”.

Also available as a free document on the internet