2-in-1 digital angle finder with moving blade that calculates internal and external angles and measures length quickly and accurately. Features: Quick 360° Digital Angle Gauge Measure angle and length (metric and imperial scale) Up to 400mm ruler measurement range Scaled at 1/32" imperial intervals on one side and 1mm metric on the other Digital display measures 1" wide by 1/2" high Zero Setting function Automatically shut off function in 6 min Stable locking function Ruler made of stainless steel Specifications: Standard: CE, RoHS, PAHs Measuring Range: 0~999.9° (More than 999.9° incorrect display) Accuracy: ±0.3° Resolution: 0.1° Ruler measurement range: 200mm (7 inches) each arm/blade Working Temperature: 0~50°C (32~122°F) Working Humidity: less than or equal to 85% R.H. Working Current: less than or equal to 50µA (More than 5000 hours in continuous use) Power: 1 x CR2032 3V Lithium Battery (Included) Dimension: 400 x 35 x 20mm Weight: about 162g Set Includes: 1 x 2-in-1 Angle Finder 1 x 3V CR2032 Lithium Battery English Instruction Manual Standard Factory Package