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Non-Slip 45 Degree Kaleidoscope & Dresden Plate Ruler - Creative Grids
Use this 45 degree Kaleidoscope ruler to cut designs with eight separate 45 degree triangle units such as kaleidoscopes or Dresden Plate blocks. The triangles can also be pieced into a saw tooth border. Cut triangles up to a finished size of 8" to piece blocks that measure up to a finished size of 16". A 1/4" dashed line is printed on each side of the center vertical line so you can cut 22-1/2 degree triangles that include the seam allowance.
Total size: 7-1/4"x8-1/2"