Here the yarn numbering of fillament yarn is described, Direct system is known as universal system of yarn count. Tex and denier is in the category of direct system. Tex = Number of grams in 1000 mtr denier = Number of grams in 9000 mtr 1 denier = 9 Tex please watch this video for understanding each item. subscribe my channel,like , comment, share to others thanks Mitu Patra ITT, cuttack, Odisha my Wsaap number - 7798327185 #weaving #basics of weaving #concept of weaving #weaving calculation #textile vlogs #Direct system of count #universal counting system #Tex and denier system #textile calculation