It's Sew Emma - Sew Standard Seam Guide
This 4-in-1 tool from It’s Sew Emma does quadruple duty as a ruler, seam guide, 0.25in marking tool for binding and features a handy 45 degree line for trimming half-square triangles. Keep it close in your sewing room to use at every stage of the sewing process!
Made of: Plastic
Use: Seam Guide
Included: One Guide