Features: Large EBTN (enhanced background twisted nematic) LCD display greatly enhance the reading experience, the lighted up numbers & letters with black background make it very easy to read, even in bright sunlight or poor light. Magnetic base quickly and easily attaches to aw tables, fences, blades and other metallic surfaces; reversible display inverts when gauge is upside down. Use as mini digital protractor, displays bevels in degrees, IN/FT, mm/for M, percent slope.It provides precise measurements, whose accuracy is ±0.1° at 0 and 90 degree, ±0.2° at any other angles. The display was inverted automatically when the upside is down. Powered on by 2 x AAA Battery and automatically turn off after 3 minutes without operation. Specifications: Material: ABS Size: 150x60x32mm/6x2.4x1.3 Inches Color: black/orange Measuring range : 4x90° Resolution: 0.05 Precision : + / - 0.2 ° Battery: 2x AAA battery Package Includes: 1x LCD Angle Finder note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.