Product Description Parts List: 1x Folding Ruler Specification: Product Name: Folding Ruler Material: Aluminum Alloy Color: Black + Red Type: 6-Sided, 9-Sided, 12-Sided (Optional) Size: 23 X 18 X 1cm/9.1 X 7.1 X 0.4 In Application: Construction & Engineering Projects And So On Note: Please Allow 1-3cm Measuring Deviation Due To Manual Measurement. Due To The Different Monitor And Light Effect, The Actual Color Of The Item Might Be Slightly Different From The Color Showed On The Pictures. Thank You! [Easy To Use] Just place the template tool ruler onto your work area, slide the rulers into the shape needed, and tighten the screws, then install the ruler on the material that needs to be cut, you can quickly draw the size and cut. [Durable Material] This multi angle measuring ruler is made of high-quality aluminum alloy, which is not easy to break due to bending or rusting, and is more durable and stronger than plastic ruler. [Wide Application] The folding ruler is widely used for creating bull eyes, arches, plumb cuts and so on, and it works great on carpentry, brick, tile, wood, glass, stone, laminate, construction & engineering projects and much more! [Folding & Practical] This flooring angle ruler is foldable, small and portable size making it easy to carry to your next project area that can help you make your work more efficiency. [High Precision] The highly visible and precise scale is very wear-resistant and can be used for a long time without worrying about corrosion. And there are two displays in metric and imperial systems, which are very suitable for precise angle measurement.