Metal Base Mounted Crimp Rigidity Tester is used to determine the bulking potential of texturized yarns and can be used for both polyamide and polyester texturized yarns. The Crimp Rigidity Tester is provided with tension device which is used in equipment to provide proper tension between two clamps. The Crimp Rigidity Tester is mounted on a sturdy metal base and comes in compact and portable construction. Metal Base Mounted Crimp Rigidity Tester is provided with heating arrangement for measurement of hot crimp contraction.