The Viking dagger or called the seax, or sax, was the universally carried knife in Northern Europe. The Viking dagger was carried and used by the Saxons, Angles, Vikings and Germanic tribes. Viking Daggers, use probably dated before the fall of Rome and continues on into the early Middle Ages. From small knives with 3-4 inch blades to actual swords with blades of 27-28 inches and always single-edged, the profile of the seax varied a great deal. The original version of this large knife served from camp work to cutting work, on shipboard, and for fighting if a sword or axe was not available.