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Yarn Linear Density Test

A 7-question self-assessment about yarn linear density systems.

1.What does the direct system measure?
2.The direct system is mainly used for:
3.In the direct system, a smaller number means:
4.What does the indirect system measure?
5.Which fibers are commonly measured using the indirect system?
6.What is a ply yarn?
7.According to ASTM D1907, how is yarn linear density measured?

Answer every question to see your result.