Item Type: Ruler _x000D_ Material: Stainless steel_x000D_ Pattern: 0-300mm / 0-500mm (optional)_x000D_ Measuring Range: 0 to 360 degree_x000D_ Resolution: 0.05 _x000D_ Accuracy: 0.2 _x000D_ Working Power Supply: 3 V_x000D_ Battery Model: 1 x CR2032 (Built-in)_x000D_ Operating Time: 5,000 hours_x000D_ Working Temperature: + 5 C- + 45 C_x000D_ Working Humidity: 85%_x000D_ Uses: Angle and length measurement 1Digital ruler can quickly display measured values on a large LCD screen, which is practical. 2With optional switch button and automatic power off, such angle ruler can be easy to use. 3Fixing screw can fix the measuring angle in any position. And you can use it with confidence. 4Meanwhile, this ruler is made of stainless steel material, which makes itself getting great popularity. 5Used for angle and length measurement, such measuring tool is entitled with pratical adoptability.1 x Angle RulerBattery is not included.