Product Info 7 Inch Digital Protractor and Rule with easy to read LCD screen This digital protractor and rule allows you to precisely set and measure angles in 0.05 degree increments. The stainless steel arms are graduated in mm, 1/16″, 1/32″ and 1/64″ for convenient and immediate linear measuring. Features a hold function, ensuring you never lose your reading, and a reverse reading capability for those hard to calculate angles. The protractor measures angles from 0 to a full 360 degrees. Packaged in a protective plastic case with an extra battery. Features: 4″ and 6″ rule Large LCD display Graduated Stainless Steel Arms for measuring Measuring Range: 0-360 degrees Accuracy: /- 0.3 degrees” Convenient Hold Function Battery: CR2032
