High Precision Triangle Ruler With Bottom Plate Aluminum Alloy Multi-Function 40JEOOTDTYechs: Four Different Sizes, 20x2 0cm/8x8in, 30x3 0cm/12x12in, 28x2 0cm/11x8in,28x3 0cm/11x12in, choose yours. Triangle ruler with bottom board, meeting all your woodworking needs. Made of high quality alloy aluminum, lightweight, easy to carry. With double-sided millimeter scale la ser, easy to read and use. An indispensable tool for woodworking enthusiasts, home builders, carpenters, engineers and hobbyists. Specification: Material: Aluminum Alloy Size: 20x2 0cm/8x8in 30x3 0cm/12x12in 28x2 0cm/11x8in 28x3 0cm/11x12inPackage Included: 1x Triangle Ruler1x Bottom PlateNote: Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.