Description 200MM Stainless Steel Electronic Digital Protractor Goniometer Angle Finder Miter Gauge Features: Display reads continuously as arms are adjusted. Hold function so you never forget a measurement. Takes both inside and outside angle measurements Large clear LCD display, give you clear viewing sreen. Strong blade lock holds securely for transfer of measurements. Reversible reading that allows you to flip the display reading to right side up. Specifications: Display: LCD Display Measurement accuracy: 0.1 Measurement range: 0-360 Degrees Button battery: CR2032 (Built in) Working Temperature: +5--45 Working power supply: 3V (DC) Size: 275mm/10.8in Package Weight: 217g/7.7oz Package List: 1 * Electronic Digital Protractor (Built in)