thumb|right|350px|Antique Japanese tekkan (tetsu ken) The , also known as tetsu-ken or , is a Japanese weapon that was used during the Edo period until the beginning of the 20th century. It was an iron truncheon; it could closely resemble a wakizashi-sized sword with a blunt iron blade, or it could be a cast-iron version of a kabutowari.
thumb|right|350px|Antique Japanese tekkan (tetsu ken) The , also known as tetsu-ken or , is a Japanese weapon that was used during the Edo period until the beginning of the 20th century. It was an iron truncheon; it could closely resemble a wakizashi-sized sword with a blunt iron blade, or it could be a cast-iron version of a kabutowari.
Tekkan became very popular during the Edo period with wealthy merchants and farmers, since such people were forbidden by law from carrying or possessing swords or other edged weapons. The tekkan, bearing no edge, had always been permitted by law.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).