taishaku 大尺

Keywords
Architecture
Measurement

Lit. "large shaku 尺." An ancient unit of length. Introduced in the Taihōryō 大宝令 codes of 701, it measured 35.6 cm, equivalent to the older Korean measure *komajaku 高麗尺. In 713 this was scaled down to approximately 30.3 cm. It was known as large shaku in comparison with the small shaku *shōshaku 小尺 of 25.25 cm. The 30.3 cm taishaku formed the basis for the *kanejaku 曲尺, which later became the standard measure of length.