The ornamental design for a perpendicularwall mounted sign, as shown and described.
FIG. 1 is a front elevational view of the perpendicular wall mounted sign illustrating the new design;
FIG. 2 is a right side view of the perpendicular wall mounted sign illustrated in FIG. 1; the left side view of the perpendicular wall mounted sign is a mirror image of that of the right side view in FIG. 2;
FIG. 3 is a rear view of the perpendicular wall mounted sign illustrated in FIG. 1;
FIG. 4 is a top view of the perpendicular wall mounted sign illustrated in FIG. 1;
FIG. 5 is a bottom view of the perpendicular wall mounted sign illustrated in FIG. 1;
FIG. 6 is a front perspective view of the perpendicular wall mounted sign shown in FIG. 1; and,
FIG. 7 is a rear perspective view of the perpendicular wall mounted sign illustrated in FIG. 1.