Creative Grids : 45 Degree Kaleidoscope Double Strip Ruler
The Double Strip-Kaleidoscope ruler is one of a range of strip rulers designed to quickly cut triangles, 1/2 Square- Triangles, 1/4-Square-Triangles, 60 degree Triangles, Trapezoids and more from strips of fabric. One side is to cut strips and the other side has relevant triangles.