Anti-corrosion: The product is made of aluminum alloy. The material is not easy to be deformed, anti-drop and anti-corrosion. Usage: The Aluminum Alloy Triangle Ruler is suitable for aluminum alloy, wood, stainless steel, marble, etc. Multifunctional: Square Size Measure Ruler is equipped with three-dimensional markings, 45 angle and 90 angle stoppers, vertical and parallel line rulers, T-shaped scribe, protractor, etc. Gift: High Precision Layout Measuring Tool is the best choice for Christmas gifts and other holiday gifts for maintenance workers, carpenters, installers, construction workers, engineers. Easy to read: The 3D Mitre Angle Measuring Tool has a clear metric scale, which is accurate and easy to read. Features: Saddle Layout Square Gauge -Color: Black. -Material: aluminum alloy. -Size: 17x7.3x6.3cm/6.69x2.87x2.48 inch. Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight 1-3cm dimension difference due to different manual measurement. Package Including 1 * Saddle Layout Square Gauge