Patent ID: 7785027

Claim:
An apparatus, comprising: a first nib structure including a first main body having a first end and a second end, the first end being opposite the second end, the first nib structure further including a first nib coupled to the first end; a second nib structure including a second main body having a first end and a second end, the first end being opposite the second end, and a second nib coupled to the first end; a twist mechanism coupled to the second ends of the first and second nib structures to selectively extend the first or the second nib structure away from the twist mechanism; an inner cylinder coupled to the twist mechanism and having a first center axis; and an outer cylinder surrounding the inner cylinder and coupled to the inner cylinder to move the inner cylinder in a rotational direction when the outer cylinder is rotated, said outer cylinder having a second center axis, and the first center axis of the inner cylinder being offset from the second center axis of the outer cylinder.