The integrated lines project clear reference point even in low light environment, while the battery release operations ensures continuous workflow through USB C fast charging Engineered with aerospace grade aluminum construction, this compact inclinometer combines a double levels tool, quick angles / slopes switching, and vibrations resistant base for professional grades reliability Perfect for aligning structural beams, calibrating machinery slopes, or verifying wall perpendicularity during renovations projects with its auto adhering design Essential for construction engineers, metal fabricators, and craft enthusiasts requiring millimeter perfect angles verification in workshop or field applications Achieve precise measurements with this digital angles finders feature 0.1° accuracy, double alignment, and four side adhesions for stable metal surfaces mounting power by USB rechargeable convenience, Manufacturer: ERRORY