New metric count (Nm) an indirect yarn count system:
The length of yarn in meters of one gram of yarn or length of yarn in kilometers of one kilogram of yarn is called new metric count(Nm). The yarn becomes finer when Nm increases. It is generally used to express the count of cotton and sometimes for flax yarn. Nm of yarn is found by following below method:
It is very simple to find out the Nm of any yarn. First of all, take a suitable length of yarn, measure its length in meters and find its weight in grams. Now put both the values in the below-given formula.
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