ISO 9961:1992 Preview
Draughting media for technical drawings -- Natural tracing paper
This standard was last reviewed and confirmed in 2015. Therefore this version remains current.
Specifies the minimum requirements, details qualities necessary for draughting and reproduction, and specifies appropriate test methods for the most commonly used grammages. Annex A describes measurement of transparency using the reflectance method, Annex B describes determination of tear growth resistance.
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