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Double barrel

Patek Philippe Ref. 5101P "10 Day Tourbillon" with **double barrel** and 10 days power reserve (click to enlarge!)
Patek Philippe Ref. 5101P “10 Day Tourbillon” with double barrel and 10 days power reserve
© Patek Philippe

A double barrel (or even triple barrel or four barrel) movement or watch features more than one mainspring and barrel for increased power reserve.

As watches became more complicated with the advent of the chronograph, repeater, and other complications, the need arose for larger power reserve. Since a mainspring can only hold so much energy, watchmakers began adding a second barrel and mainspring. Today, some watch movements even include three or four barrels to power their complications or give longer running time.

Multiple barrels can be configured in three different ways

See also


double_barrel.txt · Last modified: 03.07.2022 15:33 by

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