November 2013
Beginner
384 pages
11h 28m
English
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* The four units of length defined by Vitruvius and expressed in terms of fractions with even denominators corresponded to the duodecimal system that was in use in Europe until the introduction of the meter in the nineteenth century (see Zöllner and Nathan, Leonardo da Vinci, p. 348). The cubit was an antique unit of length equal to the length of the forearm and hand.