Question

how is the distance yard decided in the early days of measurement

Answer 1

Some believe the origin was the double cubit, others believe that it originated from cubic measure. Whatever its origin, the early yard was divided by the binary method into 2, 4, 8, and 16 parts called the half-yard, span, finger, and nail.

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Answer 2

Some believe that the origin was double cubit others believe that it originated from cubic measure the early yard was divided by the binary method into 2,4,8,16 parts called half yard , Span, finger and nail

i hope it will help you...