Multipurpose Angle finder: Protractor, 2 Arm, Locking, 4 Scales, Inward & Outward Measurement Two Arm Design Measures Inward and Outward Angles Fast and Easily Graduated in Four Easy-to-read Black Scales Protractor Locks in Place for Marking Repeat Angles Lifetme Warranty - Comes in Hanger/Storage Pack Yellow - Orange Plastic with Brass Metal Thumb Screw & Reinforcements