Features: The V groove base with strong magnets enables strong attachment over a curve or cylindrical magnetic surfaces. Display remains upright enabling viewing at all angles. Large and clear LCD display with 0.1° resolution. Absolute and relative measurement conversion. High-impact, high-precision machined aluminum framework, durable to use. Specifications: Material: Aluminum alloy Measurement range: 4 x 90° Accuracy: 0.1° at 0° and 90°, 0.15° at others. Graduation: 0.05° Repeatability: 0.1° Working current: ≤8mA Static current: ≤20μA Operating temperature: 0°C ~40°C Operating humidity: ≤80%RH Magnets diameter: 12mm / 0.47inch Magnets pitch: 88mm / 3.46inch Screen size: 61 x 28mm / 2.4 x 1.1inch Product size: Approx. 152 x 34 x 63mm / 5.98 x 1.3 x 2.4inch Weight: Approx. 370g Package Included: 1 x Digital Protractor 1 x Bag 2 x Standby battery Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1、The V groove base with strong magnets enables strong attachment over a curve or cylindrical magnetic surfaces 2、Display remains upright enabling viewing at all angles 3、Large and clear LCD display with 0.1° resolution 4、Absolute and relative measurement conversion 5、High-impact, high-precision machined aluminum framework, durable to use