In measuring the length of something long such as rope, the length is easily represented by the hiro by a manner that a measurer repeats the following: Hold a rope in one's both hands and then outspread the arms.
紐などの長さを測るときに、紐を両手で持ち、両手を一杯に広げるということを繰り返すことで、尋による長さを簡単に求めることができる。