Extended measuring surface with Swing-out ruler._Size: 12in/30cm Self-levelling Swing-out ruler with paper guide.Easy change Blade Carriage Non-slip feet on bottom.Light enough to travel but sturdy enough for a big job.Cutter heads can be separated for independent use.Replacement Cutter Heads available in Straight,_ Perforated & Fold-Line (Scoring)Suitable for cutting paper card, plastic sheet, film, appliqu_, fabric, photo paper etc.