High Quality - Made of aluminum alloy material, which is wear-resistant, anti-oxidation and durable. Key Features: Clear metric scale for engraving, accurate and easy to read. Comfortable Hand Feel - Fine Polished Surface, Comfortable Hand Feel. Durable Robust and durable - great for 3D markup, 45 and 90 degree measurements. Easy to Use - Professionally designed and easy to use. Color: Red Angle error: less than 0.2 mm Length error: 0.2 mm Product Dimensions: 170 x 63 x 73 mm / 6.7 x 2.5 x 2.9 inches Material: Aluminum Alloy Color: Red Package Contents: 1 x Multifunctional Square Square Only the above package content is included, other products are not included. Note: Light shooting and different monitors may cause the item color in the picture to be slightly different from the real thing. Measurements allow +/- 1-3 cm.