Empire Magnetic Polycast Angle Meter Protractor, 0-90 degrees, 5w x 5 3/4h, Plastic: * Angle in! Easy-read dial allows you to determine pitch and slope at a glance * Impact-resistance Polycast acrylic lens provides the clarity of glass * Adjustable angle pointer simplifies use * Angle-pitch chart streamlines calculations * Magnetic base and back * Level Type: Angle Meter * Leveling Axis: Variable