mainspring
US /ˈmenˌsprɪŋ/
・UK /ˈmeɪnsprɪŋ/
C2
n.NounMost important spring in clock or watch, etc.
He replaced the mainspring in the vintage watch.
Video subtitles
The History of the Rolex Daytona | Bob's Watches
- By reconfiguring its sub-dials, moving the hour and minute chronograph counters to the 3 and 6 o'clock positions, its gear train became a touch less complex, meaning a larger mainspring barrel with a power reserve of 72 hours could be fitted.
By reconfiguring its sub-dials, moving the hour and minute chronograph counters to the 3 and 6 o'clock positions, its gear train became a touch less complex, meaning a larger mainspring barrel with a power reserve of 72 hours could be fitted.