NIUNIU Digital LED Display Level Box Protractor Angle Finder Level Gauge Bevel Gauge Inclinometer All Sides with Magnetic Based Backlight IP54 Waterproof Digital Protractor for Precise Angle MeasurementsUsed for calculation in helicopter/cone angle of mitre saw/autotest and repair. Not only is it useful for carpentry projects, but it can be used for many other uses around the home. It is useful when you hang pictures on the wall, find a flat place when camping, setting decorative bricks in the garden. Measuring Range With Magnets on 4 SidesMeasuring range: 4*90, Accuracy: 0.2(0.1 at 0 and 90), Display resolution: 0.05; The magnets in 4 facets allow you to attach the gauge to any steel object. Large LCD DisplayThe large EBTN (Enhanced Background Twisted Nematic) LCD display greatly improves the reading experience. The illuminated numbers and letters with black background make it easy to read even in bright sunlight or poor light. Zero and Hold Functions Auto Power OffZero and Hold functions allow you to accurately measure absolute AND relative angles and slopes on any surface imaginable; digital level box is powered by 2 pieces AAA batteries (included) and switches off automatically after 3 minutes without operation. More FunctionsAuto reading, low power prompt and calibration function. Colour: Black Size: 56*56*26mm Quantity: 1pc 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding. 3. Only the above package contents, excluding other products.