4 Mini Circles Template for 1/2" Foot - Clear with Ruler 1/4" Thick Markings are laser engraved for long lasting use. For use with 1/2" Hopper Foot or by hand Includes 8" Ruler engraved on top and "3,12,9" guideline marks. ~1/4" Thick - Clear Acrylic 1 1/2", 1", 3/4", 1/2" Finished Sizes - Overall sizes 1/2" larger each