Features: 1Wide Range Of Applications: Spinal goniometercan be applied for measuring the range of joint motion and the angle of the spine, etc., then treat according to the actual situation. 2Pain Rating Scale: Each facial expression represents a different level of pain, and patients are asked to choose an expression that can represent their own level of pain. 3Clear Scale: Easy to read, reasonable design, flexible operation, easy to use. Smooth surface and mellow corner, will not scratch skin, can be used with confidence. 4Portable Design: An important and necessary tool for physical treatment, exercise treatment or rehabilitation programs. Small and lightweight, easy to store and carry. 5Plastic Material: Orthopedics ruler is made of excellent plastic material, safe and eco friendly, firm and sturdy, not easy to crack or break, stable and durable. Item Type: Orthopedics Ruler Material: Plastic Use: Vernier evaluation ruler, facial expression digital pain rating Package Included: 1 x Orthopedics Ruler