Knowra Shaku Shaku The shaku is a traditional Japanese unit of length equal to 10/33 of a meter, approximately 30.3 centimeters. Its value and legal use have varied across historical periods and applications.
Japanese units of measurement : Traditional Japanese systems of measurement include units for length, area, volume, and mass. The shaku belongs to the traditional Japanese system of length measurement.
Japanese carpentry : Japanese carpentry is a woodworking tradition known for precise joinery and timber construction. Traditional Japanese carpentry uses shaku-based dimensions in planning and construction.
Shakkanhō : Shakkanhō is the traditional Japanese measurement system based on units including shaku, sun, and kan. The shaku served as the central length unit in this system.
Kujirajaku : Kujirajaku is a traditional Japanese shaku variant historically used in textile measurement and longer than the standard carpenter’s shaku. It shows that shaku did not always indicate a single fixed length.
Metric system : The metric system is a decimal system of measurement based on units such as the meter and gram. The shaku’s modern definition is expressed as a fraction of the meter.
Japanese architecture : Japanese architecture encompasses building traditions shaped by climate, materials, aesthetics, and social practice. Historical buildings and plans often organize dimensions around shaku and ken.
Chinese units of measurement : Chinese units of measurement are historical systems whose standards influenced neighboring regions, including Japan. Japanese length measures developed in exchange with Chinese measurement traditions.
Munejaku : Munejaku is a traditional Japanese length measure associated with building construction and distinct from other shaku standards. Its specialized standard contrasts with the familiar general conversion of about 30.3 centimeters.
Sun (unit) : The sun is a traditional Japanese unit of length equal to one-tenth of a shaku. It subdivides the shaku into a smaller practical measure.
Tatami : Tatami are woven floor mats used in Japanese interiors, with dimensions that vary by region and period. Traditional room dimensions are often related to tatami sizes expressed through shaku-based measures.
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