Helix Sketch Master Template (37166) Reviewhttp://tinyurl.com/lfkto8h Helix Sketch Master Template (37166) 12 each equilateral triangles, hexagons, squares, and circles (48 shapes total) in 1/32-Inch increments from 3/32-Inch to 1/2-InchMade from dimensionally stable .03-Inch green transparent shatter resistant plastic, overall size 3 1/2-Inch x 5 7/8-InchDesigned for use with a 0.5mm lead or pen tip; ink risers on reverse side prevent smudging when using inking pen
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