This angle measurement protractor fits for hospital and office use. It helps to measure the patient's joints and more accurately locate them. Also, it can be used as a simple teaching equipment for school students and teachers to use. It is very convenient to use, and it is good for completing your work. It's also an essential tool for any toolbox. Feature - Color: As shown. - Material: Plastic. - Size: 32.00X13.00X0.20cm/12.58X5.11X0.08 inch. - It helps to measure the patient's joints and more accurately locate them. - Clear reading: The transparent plastic of the goniometer allows you to place the device directly on a joint or limb for easy observation. - Clear plastic goniometer can be used as an medical evaluation tool in different types of physical therapy settings. - It is easy to carry around and can be used for a wide variety of patients' needs. If you're at home recovering from surgery, this is also a convenient set to track your progress and mobility.