Japan's Top Inventions - Season 4 - Eps 6: Sushi Robots / Refractometers
The fascinating stories and secrets behind hit Japanese products, plus parts and machines that boast the top share of niche markets. In the first half of the program, we cover the secrets behind the development of sushi robots, which automatically grip and mold rice, and have helped spread sushi around the world. In the second half of the program, we introduce refractometers, which instantly display the sugar content of fruit when a few drops of fruit juice are added.
About Japan's Top Inventions

Title: Japan's Top Inventions
First Air Date: 2018-03-18
Last Air Date: 2025-03-29
Status: Returning Series
Rating: 0/10 (from 0 votes)
Language: EN
Seasons: 8
Total Episodes: 93
Network: NHK WORLD-JAPAN
Genres: Documentary
Production Companies: NHK, Japan International Broadcasting (JIB)
Synopsis
Japanese inventions are used and loved around the world. Through interviews and reenactments, go behind the scenes and discover how Japanese craftsmanship brought these top inventions into being.