... year free guarantee Computer Servo Control Single Column Tensile Tester Parameters:Capacity: 5,10,25,50,100,200 ... ;RS232D,Computer servo system ;Desktop computer servo control tensile tester dedicated systemE, Display modes: Windows Interface displayF, Convenient ... strength, 300% stretching strength, modulus of elasticity, elongation, peel interval maximum, minimum and average, etc.G, Many languages ...