Patek Philippe Calatrava Pilot Travel Time Manual page 10

Note: The pushers used to set the local time feature a pat-
ented safety lock that prevents inadvertent changes to the
local time setting. Before they can be actuated, they must
be unlocked with a quarter turn in the counterclockwise
direction. After setting the local time, lock the pushers
again with a quarter turn in the clockwise direction.
Unlock:
turn counterclockwise
1 /4
Lock:
turn clockwise
1 /4
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