Model Number:Universal Bevel Protractor Material:carbon steel Measuring accuracy:0.2 Features:Angle Measuring Ruler 1. A universal bevel protractor for measuring precise angular or angular measurements of the inner and outer portions of a score line. 2. Extended blade with beveled edge, roller knob and fine adjustment. 3. Made of high quality carbon steel, practical and durable. 4. Has a high precision of 0.02 and is easy to use. 5. Equipped with a box to protect the bevel protractor. 6. Size: 16x15x3 cm