? High Quality Rafter Square ?: Made of high-quality aluminum alloy, the surface is matte, anti glare, durable and smooth without hurting hands, making it easy to carry. ?Multi-functional Rafter Square ?: The 7 inch rafter square ruler with level built in is widely used for marking square ruler,Quickly draw a circle, Protractor, 45 degree line,frame square ruler, triangle ruler, spirit level , draw parallel lines and other purposes. (Please note that the horizontal function is only available on the front of the triangular ruler and is not supported on the back. Horizontal bubbles cannot be seen on the back.) ?Detachable Steel Ruler?: Comes with a mini steel ruler. This stainless steel ruler is held in place by a magnetic attachment, making it easier to slide and measure, more convenient to use, and simple to detach. It is suitable for measuring small-scale depths. ?Precision scale ?: The scale is precise and clear, making it easy to read data ?Scope of use ? This framing square with level is suitable for timber projects, construction, but also for hobbyists, house builders, manufacturers and artists.