In above we found that there are different types of yarns. The thickness is a very important property of a yarn. So there are methods to determine & define yarn thickness. Depending on the units used for measuring Length & mass, fineness of a textile yarn is given in different units. Such systems having different units employed to indicate fineness are called Yarn Numbering Systems. There are two types of systems & they are;

Direct System ( Mass per unit length)

Indirect System (Length per unit Mass)

01. Direct System

a. Tex System

This system represents the weight in grams per 1000 m length (1000m weight in grams)

b. Denier System

This system represents the weight in grams per 9000m (9000m weight in grams)

02. Indirect System

a. Count System (Ne)

In this system, count refers to the number of hank (01 hank equals to 840 yards) in one pound. This system called as English system as well.

b. Metric System (Nm)

Here it is The number of unit length of 1000 m is 1 kilogram.