Editing ETA SA (section)

=== ETA 2892 ===
The ETA 2892.A2<ref>{{cite web |url= http://www.horlogerie-suisse.com/Complications/2892/2892-A2.html |title= 2892 |work= Complications |publisher= Horlogerie Suisse |url-status= dead |archive-url= https://web.archive.org/web/20070305075713/http://www.horlogerie-suisse.com/Complications/2892/2892-A2.html |archive-date= 2007-03-05 }}</ref> is a newer design dating to the 1970s and fitted with top quality components.

An automatic winding, 21-jewel movement, the 2892 is available in three executions or grades: ''Elaborated'', ''Top'' and ''Chronometer''. The key components which differ at the line of demarcation between Elaborated and Top are the balance wheel (Elaborate=Brass/Top=Glucydur) and the hairspring (Elaborate=Nivarox 2/Top=Anachron). In contrast, since the addition of the "-2" at the end of the movement number, there has been no difference between the standard and the chronometer grades in terms of the regulator mechanism, both being Etachron. The degree of decoration on the movement's parts also increases with the grade.<ref>{{Citation | type = Manufacturing Information | title = 2892A2 | publisher = ETA | place = Grenchen | date = June 2006}}.</ref> To illustrate the differences in accuracy garnered by the successive grades, consider the following specifications:
* ''Elaborated'' grade is adjusted in four positions with an average rate of ±5 seconds/day, with a maximum daily variation of ±20 seconds;
* ''Top'' grade is adjusted in five positions with an average rate of ±4 seconds/day, with a maximum daily variation of ±15 seconds.
* ''Chronometer'' an average rate of −4/+6 with a maximum daily variation of ±5 seconds - standards prescribed by the [[COSC]]. The wider range for the chronometer grade is designed to take into account the differences in a watch's rate between static positions, as when the tests are performed, and the dynamic positions as when a watch is actually worn.  Chronometer grade movements are serial numbered.

The ETA 2892.A2 is usually found in the more expensive and prestigious watches and brands, and owing to its relatively slim height of 3.60&nbsp;mm, the 2892.A2 is a favorite of watch brands that market complicated movements such as [[Breitling SA|Breitling]] with its trademark [[chronograph]] (stop watches).  The 2892 is also used in certain [[International Watch Company]] watches, including newer Ingenieur models introduced in 2013.<ref>{{cite web|url= http://www.hodinkee.com/blog/introducing-the-iwc-ingenieur-automatic-40mm |title=A Look at The New IWC Ingenieur Automatic: 40 mm and Anti-Magnetic, This Is The Purist's Ingy (Live Pics, Pricing)|work=Hodinkee}}</ref>