Global organization responsible for standardizing weights and measures offers a publications guide and details about its certificate system.

Provides an explanation of the term and how it is used in chemistry and gemology.

Definition divides the sections of time into components that add up to the 24-hour day.

Find out about the attempts to standardize time, common energy measurements and chemical principles.

European measurement unit describes units in lots of 1000, or "k". See upper and lowercase rules.

Definition of luminous flux allows you to understand how the strength of the visible energy from a single candle flame is measured.

Check out the history of the measuring system and the mission of the US Metric Association. Includes a brief overview of weights and measures.

Offers a concise description of the different varieties of the weighing scale for measuring mass.

Encyclopedia entry chronicles the history of this device and introduces key figures in its development.

Provides details on this Anglo-American system for weighing precious metals.

Defines this term for the gravitational pull exerted upon an object and discusses how it is measured.

Provides an overview of the two principal systems of measurement, the metric and the English.

Find an alphabetical guide to measurement units and a list of standard abbreviations. Includes a metric system converter.