Literal Japanese translation: "ten hands."
The jitte was a weapon that was carried by police in Edo Period Japan. It was carried by all ranks of police officers during official business and also served as a substitute for a badge. It is also the subject of Jittejutsu (十手術), a martial art developed by law enforcment officers meant to disarm and apprehend criminals (who were usually carrying a sword.)
In the anime franchise Lupin III, the character Inspector Koichi Zenigata often carries an antique jitte passed down from his ancestor, Heiji Zenigata, a police officer in the Edo period from a completely unrelated series of fictitious stories.