Deconstruction of a Breguet 8978

book cover for site wizard 8978.jpg
Breguet 8978_LR_4.jpg
Breguet 8978_LR_6.jpg
Breguet 8978_LR_3.jpg
Breguet 8978_LR_5.jpg
Breguet 8978_LR_2.jpg
Breguet 8978_LR_7.jpg
Breguet 8978_LR_8.jpg
book cover for site wizard 8978.jpg
Breguet 8978_LR_4.jpg
Breguet 8978_LR_6.jpg
Breguet 8978_LR_3.jpg
Breguet 8978_LR_5.jpg
Breguet 8978_LR_2.jpg
Breguet 8978_LR_7.jpg
Breguet 8978_LR_8.jpg

Deconstruction of a Breguet 8978

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Summary

With both the going train and the striking train driven from the same barrel and wound by the same automatic mechanism the design limits the volume required for conventional ‘sonneries’, practical in a relatively small ladies watch. The aesthetics are simple although the theory behind the calibre complex, including assuring the time-side of the watch continues for the published power-reserve once the power reserve for the passing strike becomes in efficient to drive the hammers.