What is another word for balance spring?
Pronunciation: [bˈaləns spɹˈɪŋ] (IPA) 
Balance spring is an integral part of a watch movement and is responsible for regulating the timekeeping accuracy of a watch. It is also known as hairspring, balance hairspring, oscillating spring, or equilibrium spring. The balance spring is made of a thin, coiled wire and is positioned within the balance wheel of a watch. It controls the swings of the balance wheel and helps keep the watch's timekeeping accuracy to a certain extent. Additionally, the balance spring's frequency is directly proportional to the watch's accuracy. Therefore, it is an essential component of a watch's movement and affects its precision, reliability, and durability.
