“EXCAL” – A precision cutting machine for stamp mounts. This Showgard Guillotine is a truly mighty machine in performance and durability. The keen 4 inch blade shears cleanly with a single stroke. Excal includes an extension gauge and a slide bar. These parts are packed under the base. Exact Calibrations, Self Sharpening Stainless Steel Blades, Warp Free hard heat Plastic.