Historical Units

スパン

定義

親指の先端から小指の先端まで広げた手の幅に等しい古代の長さの単位で、約23 cm(9インチ)に標準化される。

解説

Half a cubit, the span was widely used in ancient Hebrew, Greek, and Roman measurement. Goliath's height in the Bible is given as 'six cubits and a span,' roughly 2.9 meters. Like other body-based units, it varied between individuals; standardization came later through royal decrees or reference artifacts. It survives in horse height measurement, where 'hands' (10 cm) replaced the older span.

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