Features Large LCD Display: Full screen ultra large LCD for simple and convenient measurement data reading. Any Position Clear: Convenient for absolute and relative measurement, and data can be saved in any location for easy reading after measurement. Automatic Shutdown Function: Saves power consumption, prolongs battery life, and enhances convenience. Engineering Plastics: Thickened and widened ruler body made of engineering plastics for good rigidity, wear resistance, and durability. Freely Tighten: Enlarged and thickened knob for convenient and reliable measurement. Specification: Item Type: Digital Ruler Material: Engineering Plastic Measuring Range: 0°~200° Working Temperature: 0℃~50℃ Working Humidity: ≤85%RH Working Current: ≤20μA Resolution: 0.05°/3′ Accuracy: ±0.5° Battery: One CR 2032 Button Battery (Battery Not Included) Package List: Item Type: Digital Ruler Material: Engineering Plastic Measuring Range: 0°~200° Working Temperature: 0℃~50℃ Working Humidity: ≤85%RH Working Current: ≤20μA Resolution: 0.05°/3′ Accuracy: ±0.5° Battery: One CR 2032 Button Battery (Battery Not Included) Note: Battery Not Included Package List 1 x Digital Ruler 1 x User Manual