A hairspring made of an alloy that compensates for ambient-temperature variations that would otherwise affect its rate. These self-compensating hairsprings, marketed under the name “Nivarox,” were introduced in 1933. Within a few years they rendered the elaborately constructed bimetallic balances, which had until then been used to counter the effects of temperature change, obsolete.
Click here to go to the Watchmaking Glossary main page
All items in S: