地板 Jiita / Ground Plate
What is Jiita in Japanese Katana terminology?
This refers to the thin plate applied to the surface of the scabbard (Saya) of the Hyogo Chain Tachi. It is often decorated with gilding, carvings, and family crests. The Jiita not only serves as a protective layer for the scabbard but also adds aesthetic value to the sword. The designs and decorations on the Jiita can also provide insights into the owner's social status and family lineage.