The ornamental design for a ladderstabilizingdevice, as shown and described.
FIG. 1 is a perspective view of the ladder stabilizing device according to the present invention.
FIG. 2 is another perspective view of the ladder stabilizing device illustrated in FIG. 1.
FIG. 3 is a front view of the ladder stabilizing device illustrated in FIG. 1.
FIG. 4 is top view of the ladder stabilizing device illustrated in FIG. 1.
FIG. 5 is a bottom view of the ladder stabilizing device illustrated in FIG. 1.
FIG. 6 is a side view of the ladder stabilizing device illustrated in FIG. 1; and,
FIG. 7 is a further perspective view of the ladder stabilizing device illustrated in FIG. 1, particularly illustrating the ladder stabilizing device installed onto a ladder for stabilizing the ladder with respect to a roof.
The broken lines shown in the drawings represent portions of the ladder stabilizing device and/or portions of the environmental structure that form no part of the claimed design.