GLONIC Digital Angle Finder Magnetic Angle Gauge Electronic Level Box LCD With Green Background Light Angle Measure Tools Woodworking Tool Mini Inclinometer Protractor

SPECIFICATION: Measuring range of digital display: 4*90° Resolution of Digital Display: ±0.1° The precision of Digital Display: ±0.1° at 0° and 90°±0.2° at 2° ~ 89° Working temperature: 0? ~ 40? Storage temperature: -10? ~ 50? Power supply: 1x1.5V “AAA” batteries (included) Dimensions: 2.24in*2.24in*1.18in Weight: 80g OPERATING INSTRUCTION ON/OFF button: Press the ON/OFF button once to turn backlight on. After approxinmately 30 seconds of no movement nor button press the backlight will goes out. Power will tuen off automatically after 3 minutes UNIT button: Press to change display;°(Degree),%slope,mm/m&in/ft. ZERO button: 1.Enter absolute measurement. 2.Enter elative measurement. Press zero button to set Zero at any position. 3.Conversion between absolute measurement and relative measurement. Press ZERO button for 3 seconds and the unit will change back to the state of absolute measurement. HOLD button: If the measured value needs to be saved, Press HOLD to hold the display. The arrows on both sides will twinkle. Press again to quit.