Manual trimmer with two rotating blades for cutting in both directions. Particularly strong for cutting thicker materials, strong blade holder carriage sliding on bearings mounted on a rectangular sliding bar. Fixed blade in painted stainless steel mounted on a reinforced cutting plane. Stand with paper collecting tray. Metallic components varnished with epoxy powder colour grey RAL 7035. provided with movable reference square. Optional: roll holder, lamp over the cutting area and sheet holder