Strength and properties of materials Torsion testing machine - TM Series TM 203M TORSION TESTING MACHINE, 200 N-m. TM 203E TORSION TESTING MACHINE, 200 N-m., Computer Interface TM 202 TORSION TESTING MACHINE, 75 N-m. TM 201 TORSION TESTING MACHINE, 30 N-m. TESTIMONIALS