The Tri-Square Multi-Ruler from Threaders can be used to make different sized patchwork shapes.Create squares, half square tirangles and quarter square triangles.Create shapes in a range of different sizes from 0.5in to 6.5in. Feaures lines as guidance to help you create the right sized shape and easy to follow half inch increments. Follow online step-by-step video tutorials. Perfect for quilters and patchworkers and can be used to cut shapes with precision. Features & Benefits Includes 1 Multi-ruler Allows you to cut squares, half triangles and quarter square triangles Make different sized shapes Specification Size: 36.4cm x 17.5cm