Perfect for measuring and constructing all types of angles, along with degrees and lengths of sides, this adjustable transparent ruler is marked in inches and centimeters and has a 0-360° scale. Transparent plastic with black markings let students accurately construct and measure angles, triangles, and other geometric shapes. Measures 12 or 30 cm when legs are parallel, and has 360° scale in 5 degree increments. Includes: 1 Angle Ruler. Bundle of 6 Rulers.