The cube has a different Symbol on each side so that the child can be shown vivid pictures and thus keep his attention longer. A Circle, a Square, a Heart, a Hexagon and a fixation "E" on top of the cube are included; these objects appeal to children.
The square shaft is intentionally designed to match the sides of the cube so that the pictures can be rotated accurately without the examiner having to shift the gaze from the child's eyes to the fixation object.