In Jorisei (system of land subdivision in ancient Japan), 6 shaku (unit of distance approximately equal to 30.3 centimeters) was 1 bu (歩; a unit of land measurement) and 60 bu made up 1 cho: However, at Taiko kenchi (the land survey by Hideyoshi TOYOTOMI), 1 cho became 60 ken (unit of distance, approximately 1.818 meters) with 1 ken being 6 shaku and 3 sun (a unit of distance, approximately 3.03 centimeters) but later with 1 ken equals to 6 shaku.
条里制においては6尺を1歩(尺貫法)として60歩を1町としていたが、太閤検地の際に6尺3寸を1間とする60間となり、後に6尺を1間とする60間となった。