The ornamental design for a tiltrod for a control system for window covering.
FIG. 1 is an isometric view of a tilt rod for a control system for window
covering, shown broken away at one end to indicate indeterminate length,
with environmental structures shown in broken lines for purposes of
illustration only and forming no part of the claimed design;
FIG. 2 is an enlarged top plan view thereof shown broken away in the middle
to indicate indeterminate length, it being understood that the contours of
the design repeat uniformly along its length;
FIG. 3 is an end elevation view of FIG. 2, the opposite end view being a
mirror image;
FIG. 4 is a right side elevation view of FIG. 2, the left side elevation
view being identical; and,