The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject. You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate. (November 2014) (Learn how and when to remove this template message)This is a nonexhaustive list of hairstyles, excluding facial hairstylesA balance spring, or hairspring, is a spring attached to the balance wheel in mechanical timepieces.It causes the balance wheel to oscillate with a resonant frequency when the timepiece is running, which controls the speed at which the wheels of the timepiece turn, thus the rate of movement of the hands. A regulator lever is often fitted, which can be used to alter the free length of the ...
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