Features: brand new and high quality With clear and accurate scale,it is convenient to read value. Easy to handle without damaging the fragile cutting edge. Made of sturdy aluminum alloy, resistant to distortion, practical and corrosion resistant. Essential tool for home builders, DIYers, carpenters, artists and hobbyists Very useful for machine setup, because it is thick. This square is a stand alone. It can be used for measuring the height of your router bit, table saw height etc.One side is metric, and other is imperial. There are two colors, red and blue. Specifications: Material: Aluminium Alloy Size: 240x150x150x16mm/ 9.45x5.9x5.9x0.63 inch Color: Red/ Blue Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Angle Ruler