Science and technology during the Edo period

mechanical clock that has been made to tell traditional Japanese time

Japanese surveyor and cartographer (1745-1818)

traditional Japanese system of measurement

traditional Japanese puppet

Japanese astronomer

Japanese astronomer

thumb|329x329px|Asakusa Observatory of Tenmongata by Hokusai The Tenmongata (天文方, Astronomy Agency) was an institute for astronomical studies operated by the Tokugawa shogunate in Edo, Japan (today's Tokyo). It is one of the predecessors of today's University of Tokyo.