Devon&Devon Madison Instructions De Montage page 20

6)
Temporarily fasten the cross to the legs with adhesive tape (if
necessary protecting the part of the arms in contact with the tape).
7)
Lean the structure you have just assembled against the wall,
making sure that it is positioned correctly by using a level in both
a parallel and perpendicular position to the wall.
WARNING:
during this step, owing to
the weight of the top,
particular care should be
given to handling and
avoiding dropping it.
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