Elmendorf Tear tester, a computer controlled falling-pendulum instrument, to decide the ballistic tearing strength of textiles, plastics, paper or board. Tear Strength Tester complies with ASTM D1424/1922/5734, ISO 1974/9290/6383-2, BS ISO 13937, etc. For more information, welcome to visit on www.testextextile.com/product/elmendorf-tear-tester-tf140c/