The General Library of the University of Tokyo owns the manuscript maps named "Sokuchi-Genzu", which were drawn for the first surveyed map of Japan by Inoh Tadataka (1745-1818). "Sokuchi-Genzu" is based on 93 sheets of the "Shitazu", the manuscript maps. The scales of "Sokuchi-Genzu" are classified into large(1:36000), medium(1:216000) and small(1:432000), which correspond to the scales of Inoh’s Map of Japan. On the "Sokuchi-Genzu" the results of Inoh's survey are plotted by needle points. The "Sokuchi-Genzu" is very important material for the research of Inoh's Map.
