Editing Science and technology (section)

==Units of measurement==
:{{Main|Measurement}}

A measurement is the assignment of a number to a characteristic of an object or event, which can be compared with other objects or events.<ref>Definition of "[[w:measurement|measurement]]" as retrieved from Wikipedia on January 26, 2018</ref> Numerous units of measurement are described in ''A Song of Ice and Fire'', primarily their usage in [[Westeros]]. The Westerosi measurement units are non-metric, growing out of [[custom]]ary use and not abstract principles. Westeros appears to have a uniform system of weights and measures, mentioned interchangeably by characters from [[Oldtown]] to [[King's Landing]] or [[Winterfell]].  

There are several basic units of measurement<ref group="N">Based on [https://en.wikipedia.org/wiki/SI_base_unit the defined base units] as determined by the [https://en.wikipedia.org/wiki/International_System_of_Units International System of Units].</ref> that have been described in usage in Westeros: length, weight, and time. Most other units of measure thus far mentioned in text are units which have been derived from these basic ones, such as area and volume. Additionally, some units of measurements commonly used in the novels are more archaic in their usage, e.g. the term "[[w:Stone (unit)|stone]]" to indicate weight{{Ref|aGoT|4}} and the term "league" to indicate distance.{{Ref|aGoT|21}}