The basic unit is the Russian cubit, called the arshin, which has been in use since the 16th century. It was standardized by Peter the Great in the 18th century to measure exactly twenty-eight English inches (71.12 cm). Thus, 80 vershoks = 20 piads = 5 arshins = 140 English inches (355.60 cm).[2]
A piad (пядь, “palm”, “five”) or chetvert (че́тверть, “quarter”) is a hand span, the distance between ends of the spread thumb and index finger.
The basic unit is the Russian cubit, called the arshin, which has been in use since the 16th century. It was standardized by Peter the Great in the 18th century to measure exactly twenty-eight English inches (71.12 cm). Thus, 80 vershoks = 20 piads = 5 arshins = 140 English inches (355.60 cm).[2]A piad (пядь, “palm”, “five”) or chetvert (че́тверть, “quarter”) is a hand span, the distance between ends of the spread thumb and index finger.
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