Features: Achieve precise 90° positioning with this stainless steel angles ruler featuring integrated construction and double measurement scale (100mm/300mm), ideal for woodworking projects requiring accuracy in parallel/perpendicular line marking. The multi angles measuring tool combines engraved, wear resistant markings with a 45° help guide, offering double scale accuracy (royal /metric) for error easy layout tasks in various craftsmanship applications. Designed for woodworking professional, enthusiasts, and construction workers seeking stable dimensional accuracy in cabinetry, flooring installations, and structural framing projects. Perfect for workshop environments, home renovation tasks, or architectural drafting where quick angles verification and scratch resistant stainless steel durability are essential for long term performances. Its erosion resistant 304 stainless steel body maintains calibration integrity across temperature variations, while the compact 100mm version (102x88mm) ensures portability for on site measurements without compromising professional accuracy . Specifications: Component : stainless steel Length: about 100mm/300mm(optional) Package Includes: 1xRight angles Marking Ruler note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.