Features: 1. 2-in-1 design for measuring both length and angle 2. Easy to use with three function keys 3. Stainless steel construction for durability 4. Measures both inside and outside angles 5. Large LCD display provides quick and clear readings 6. Equipped with fixing screws to lock the angle in place 7. Measures angles and length with metric and inch unit display 8. Compact and lightweight for portability and convenience 9. Stainless steel ruler allows for precise line marking 10. Multi-functional tool suitable for use instead of angle rulers, straightedges, and squares Specifications: Material: Stainless steel + ABS Range: 0–200 mm Measuring range: 0–360 degrees Resolution: 0.05 degrees Accuracy: ±0.03 degrees Battery: 3V CR2032 (included) Operating temperature: 0–40°C Operating humidity: Up to 80% RH Package Includes: 1 x Digital Protractor 1 x Plastic Blister 1 x Paper Card 1 x CR2032 Battery