I claim the ornamental design for a feather board apparatus, as shown and described.
FIG. 1 is a perspective view of the new design for a feather board apparatus, viewed from a front and top side thereof;
FIG. 2 is a perspective view of the new design for a feather board apparatus, viewed from a rear and top side thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a rear view thereof;
FIG. 8 is a front view thereof;
FIG. 9 is an exploded perspective view of the new design for a feather board apparatus; and,
FIG. 10 is a perspective illustration showing the first embodiment of the new design for a feather board apparatus in use.
The broken lines and the drawings are shown for illustrative purposes and form no part of the claimed design. In addition, the surface shading illustrated in the drawings is provided merely to highlight the contour of the design, and is not intended to be illustrative of texture or gloss.