Alignment cube extension

Description

FIG. 1 is an isometric view of an alignment cube extension showing my new design.

FIG. 2 is an isometric view thereof.

FIG. 3 is a side view thereof.

FIG. 4 is a side view thereof; and,

FIG. 5 is a side view thereof.

Claims

The ornamental design for an alignment cube extension, as shown and described.