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'''British Standard Wire Gauge''' ('''SWG''') is a set of wire sizes given by
▲'''British Standard Wire Gauge''' is a set of wire sizes given by [[British_Standards|BS]] 3737:1964 (now withdrawn), and is generally abbreviated to SWG. It is also known as: '''Imperial Wire Gauge''' or '''British Standard Gauge'''. Use of SWG sizes has fallen greatly in popularity, but is still used as a measure of thickness in guitar strings and some electrical wire. Cross sectional area in square millimetres is now a more popular size measurement. The current British Standard for metallic materials such as wire and sheet is BS 6722:1986, which is a solely metric standard.
The basis of the system is the ''[[thou]]'' or ''mil'' in US English which is 0.001 inch and is different to the millimetre (mm). No. 7/0, the largest size, is 0.50 inch, 500 thou or 12.7 mm in diameter, and the smallest, No. 50, is 0.001 inch, 1 thou or about 25 µm in diameter.
{| class="wikitable" style="text-align:center"
▲|+ British SWG (Standard Wire Gauge) diameters
! SWG
! in
Line 261 ⟶ 252:
|0.0010
|0.0254
|}<ref>[http://www.unc.edu/~rowlett/units/scales/wiregauge.html Wire gauge table (U.S./U.K.)] by Russ Rowlett, University of North Carolina at Chapel Hill, 2008</ref>
== See also ==
{{From Wikipedia|American_wire_gauge}}
* [[
== References ==
{{reflist}}
[[Category:
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