Creative Grids 9in Seam Guide Tool - CGRSMN9

This 1/2 x 9 inch seam marking tool is long enough to mark the diagonal of a 6-1/2 inch square, Mark through the slotted center with any mechanical pencil and sew 1/4 inch on each side of the tool, Or mark the sewing line by drawing on both outside edges, The perfect tool when making half-square triangles