一切經音義 49.273

49.273

咫尺（上之尒反杜注左傳云八寸曰咫說文云中形婦人手長八寸謂之咫周尺也從尺只聲下嗤隻反說文云十寸也人之手十分動脉為寸口十寸為尺肉所以指尺䂓矩事也周制寸尺咫尋常仞諸度量皆以人之禮為法也從尺從乙乙所識也）。

咫尺 (The first character is *zhi* + *er* fanqie; Du [Yu]'s commentary to the *Zuo tradition* says: "Eight inches is called a 咫." The *Shuowen* says: "The hand of an ordinary woman, eight inches long, is called a 咫, the Zhou foot-rule; derived from 尺 with 只 phonetic." The second character is *chi* + *zhi* fanqie; the *Shuowen* says: "Ten inches; the ten tenths of a human hand's pulse is the *cun kou*; ten inches make a foot [尺]; the flesh with which one indicates feet and inches, compasses and squares. In the Zhou system, inches, feet, spans, yards, and fathoms—all measures—took the rites of man as standard; derived from 尺 and 乙, 乙 being what marks it").