Features 1、These medical rulers are made of high quality plastic, lightweight and durable. 2、The rotatable straight ruler has a center line through the angle plate, easy to measure and read angle. 3、The semitransparent design makes it more convenient to read angle. 4、Designed to measure the range of motion in the joints. 5、Specially designed for medical measurement. Specification Features: These medical rulers are made of high quality plastic, lightweight and durable. The rotatable straight ruler has a center line through the angle plate, easy to measure and read angle. The semitransparent design makes it more convenient to read angle. Designed to measure the range of motion in the joints. Specially designed for medical measurement. Specification: Condition: 100% Brand new Material: Plastic Measuring Range: 6/8/10inch Package list: 3* Rulers Package List