The numerical code consists of four or five digits (depending on the color code that can take one or two digits). The units digit indicates the size of the pen, and with this also the overall size of the pen. For [[Carter Coralite Pen]] the number starts from size 2, the smaller, to size 7, the greatest. For [[Carter Pearltex Pen]] these measures start from size 2, the smaller, to size 8, the largest. | The numerical code consists of four or five digits (depending on the color code that can take one or two digits). The units digit indicates the size of the pen, and with this also the overall size of the pen. For [[Carter Coralite Pen]] the number starts from size 2, the smaller, to size 7, the greatest. For [[Carter Pearltex Pen]] these measures start from size 2, the smaller, to size 8, the largest. |