Specifications: Material: Aluminum alloy Colors: Black Red Size: 41*20.8cm/16.14*8.18 inches T-shaped hole ruler/Rotating angle ruler: 1.Straight edge+angle drawing 2.Integrated engraving 3.Dual scale in English and Chinese 4.Edge guiding rule 5.Multi angle rotation Featrures: 1.The scale adopts engraving, which is clear, easy to read, and not easy to wear and tear 2.Foldable and versatile One foot multi-purpose, economical and practical 3.The entire product is made of high-quality aluminum alloy forged and precision processed, with exquisite workmanship and overall appearance and durability Description: 2-in-1 Angle Ruler: The combination of ruler and protractor makes it can measure length and angles easily. The angle ruler has a clear and accurate scale and can measure length (0-33 cm/0-13 inches), whether you are drawing a line or measuring an angle, you can meet your work needs at the same time, saving you time and effort. High Qualtiy: The body of the adjustable woodworking ruler is made of aluminum, which has good durability and abrasion resistance and is not easy to deform. With a thickness of 12mm, the ruler is both lightweight. If you're looking for an accurate angle measuring tool, our aluminum construction protractors is just what you need. Adjustable Angle Finder Tool: Our angle protractor is not an ordinary angle measuring tool. It has multi-angle scribing function, By locking the knurled nut in the desired position, you can quickly and accurately identify angles and draw straight lines for setting bevels, drawing radial lines, measuring and marking angles. Engraved Scales: The angle protractor dial is engraved with engraved measurements for clear readability and durability. The numbers and scales on the angle protractor dial can be clearly displayed in different environments. Multi-functional Protractor: This adjustable angle protractor is suitable for engineering, angle measurement, drawing, architectural design, length measurement, a useful tool for craftsmen, designers, artists and engineers. Package: 1pcs Rotating angle ruler