Detailed Product Description SDT Series Torque Tester is special-purpose on various form of torsion spring, ... . The torsion, angle are the digital display, accurate, ocular. Enclose transducer deformation amount of different torsion, different torsion angle and compensate ... 1~10 seconds (can be since established) later.SDT Series Torque Tester,Torsion Tester ...