Lowell 30cm Portable Paper Trimmer The Lowell 30cm Portable Paper Trimmer is perfect for any home or office. This trimmer allows you to trim up to 3 pages of 80 gsm paper at once with its sharp metal rotary blade. Ensure your cuts are accurate with the guidance of both metric and imperial printed measurements. GBC A4 A425 4-in-1 Rotary Paper Trimmer This GBC A4 A425 4-in-1 Rotary Paper Trimmer features the capability to switch between 4 different cut styles without having to remove the blade. It has a durable metal base which has imperial measurements printed which helps you cut accurately.