Fons & Porter Quarter Inch Seam Markers. 14in & 18in. Made of durable clear acrylic. Quick and easy method for making half-square triangles and hourglass units. Mark 1/4in sewing lines on patchwork pieces. Longer length works well with Layer Cake pre-cut fabric pieces (10in squares).... - Fons & Porter Quarter Inch Seam Markers. |