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https://www.azom.com/materials-video-details.aspx?VidID=1456 Thwing-Albert's Z-Directional Tester Mar 8, 2013 - This video shows the Thwing-Albert's Z-Directional Tester (ZDT) that measures the internal fiber bond strength of paper, paperboard, liner board and coated... thwing alberts zdirectionaltester https://www.thwingalbert.com/ Material Testing Equipment Manufacturer | Thwing-Albert Thwing-Albert is a leading manufacturer of materials testing equipment for the evaluation of physical properties. Contact us for more details. material testing equipmentmanufacturerthwingalbert