The rotating allows quick angled adjustments, simplifying operational for beginners while ensuring stability during measurements This adjustable aluminum triangle ruler features a 0-90 degree with etched scale for accurate angled readings, perfect for woodworking and carpentry projects requiring measurements Versatile for measuring angles, drawing straight lines, and sketching arcs, catering to woodworking, construction, and design application Made from high strength aluminum, this ruler durability and pressure resistance compared to models, ideal for both professional use in heavy duty projects Easy to carry and store, suitable for on site jobs or home workshops, meeting various measurement and planning needs, Manufacturer: ZEPFJHE