Key FeaturesDigital Angle Readout - Easy to read LCD display of angle measurementSimple Calibration - The display can be set to zero at any position. using the zero calibration buttonRuler Legend - Clear metric and imperial ruler legendRuler Lock - The Stainless ruler arms can be locked securely at any positionIncluded with the gauge - Battery and InstructionsRuler length - 500mm (20 inch)Range - 0-360 degree*Resolution - 0.1 degreeAccuracy - 0.3 degreeLCD display - 8mm character heightBattery - 3V CR2032*NOTE - when the arm is rotated over 360 degrees the display will continue to count up to 999.9 degrees