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cated power reserve. Its isochronism is un-
disturbed.
Release the crown, which returns auto-
matically to position 1. The two seconds
hands are locked at 0. Note that the esca-
pement continues to function thanks to its
dedicated power reserve. Proceed to set
the hours and minutes and, on the hour si-
gnal, push the crown back into position 0.
The watch starts running again.
SETTING THE DATE
The Duomètre Quantième Lunaire watch
displays the date with a hand positioned
at 9 o’clock. It is corrected using a push-
piece at 10 o’clock(A), which allows one-
day jumps.
SETTING THE MOON PHASE
The Duomètre Quantième Lunaire watch
indicates the moon phases of the northern
hemisphere in an aperture.