Features Specially Designed For Medical Measurement: The multifunctional measuring ruler kit is specially designed for medical measurement, with a wide range of applications and can measure different parts. Easy To Measure And Read: The measuring ruler set rotates the centerline of the ruler through the angle plate for easy measurement and reading of angles. Practical: The medical measuring ruler is used to measure the range of motion of joints. It has a smooth and flat appearance, excellent workmanship and exquisite workmanship, and is very practical. Translucent Design: The measuring ruler is a translucent design with clear scales, making it easier to read the angle, very convenient and easy to use. Lightweight and Durable: These 360 degree protractors are made of selected plastic, which are lightweight and durable, which can satisfy our use. Features:  1.These medical rulers are made of 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: Condition: 100% Brand new Material: Plastic Measuring Range: 6/8/10inch Options: Set 1, Set 2   Package list: 5 * Rulers Package List