Quelltext der Seite Balance spring

'''Balance spring'''<br>(or ''hairspring'')
[[Bild:Spiralabzählgerät.jpg|thumb|Spiralabzählgerät]]
A [[balance]] spring is a fine spiral or helical spring used in mechanical watches, [[marine chronometer]]s, and other timekeeping mechanisms to control the rate of vibration of the balance wheel. A balance spring usually has a regulator lever to adjust the rate of the timepiece.

== Types of balance springs ==

*flat spiral
*[[Breguet overcoil (Breguet spring)]]
*chronometer helix
*showing curving ends
*early balance springs

== [[Terminologie|TERMINOLOGIE NUMEROTATION]] ==

{{Terminologie |ISO Nummer=40.140|Alte TNR=(0734)|
de=Spiralfeder reguliert|nl=|
en=Timed hairspring|pt=Espiral regulado|
es=Espiral regulado|ru=Спираль правленная|
fr=Spiral réglé|=|
it=Spirale regolata|=|
Bild=Zahnrad ico
}}

== Literature ==
*[[The Marine Chronometer. Its History and Development]], ISBN 0-907462-05-7
*[[Time and Timekeepers]], ISBN 0780800087 


[[Category:Glossary]]

[[de:Spirale/de]]
[[en:Hairspring]]
[[it:Spirale/it]]
[[nl:Spiraalveer]]
[[ru:Спираль]]