Key Features: Measures back and spinal rotation to help identify scoliosis Easy to read! Displays 0 to 30 degree measurements Perfect for adults and children Includes protective carrying case Trusted by around the world The Scoliosis Tester has a , easy-to-read test display. This portable device is perfect for identifying patients who may have scoliosis. How to use: Step 1: The subject remains standing with feet shoulder-width apart and hands sideways. : Hang your arms down and do a standing forward flexion- position, keeping your arms and The horizontal plane is vertical, keeping the arm perpendicular to the drain. Material: Plastic colour: silver white Package Contents: 1 x Electronic Scoliosis Scale Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.