Raindrop World Goniometer Degree Protector Angle Finder Arm Rule Professional Metal 0-180 Degrees 150mm Measurement Scale (Small, 4.8 inch) Medical Goniometer  (4.8 inch)

Goniometer Degree Protractor is made of high quality stainless steel, durable and smooth surface, High quality stainless steel protractor can work many years. Protractor equipped with an adjustable screw. Easy to rotate and no need worry of hurting your hand. When want to set a specific angle, the adjustable screw can help a lot Protractor is suitable for many ways. Such as perfect for school, commercial, home, mechanical work, woodworking applications,hobbyists and so on. It can improve efficiency A Goniometer Degree protractor set is made up a 180 degrees protractor. They was fixed together by an adjustable screw. Elegant design, accurate graduation, polished finish.