Deli Digital Protractor Angle Finder Inclinometer Electronic Measurement Level Angle Slope Test Ruler Length 600mm Three StylesDeli Digital Protractor Angle Finder Inclinometer Electronic Measurement Level Angle Slope Test Ruler Length 600mm Three Styles 1. Product name: die cast aluminum spirit level 2. Solid cast aluminum ruler body design, thickness greater than 3mm, to ensure high strength, solidity and durability, ruler length: 600 mm, aluminum ruler body, surface painting, measuring surface milling, 3 horizontal bubbles, bottom with magnet, Deli quality 3. Blue anti