Size 8-3/8" X10-3/8" X 20 mil. Ideal for making geometric templates and patterns. Conventional drafting tools are not needed to draw perfect stars, octagons, squares, triangles and a variety of interesting shapes. Tiny holes in the transparent template are used to mark selected points with pen or pencil. The points are connected by drawing along the edge of the template. Sizes range from 1/2 to 8 inches, or the points can be extended for larger sizes