Mini Simple Folded Corners Ruler, designed for Miniature Enthusiasts! Use for base fabrics that are smaller than 4.5" (what you will be adding a folded corner ) Use with any pattern calling for folded corners. Use with any pattern calling for folded corners again! Seven different sizes to choose from, 1/2" to 3 1/2" finished corner. Choose between two methods: exact size folded corners with no trimming needed OR oversize folded corners that are trimmed down. Easy to read a ruler. No matter what shape you are adding a folded corner to (square, rectangular, triangle), Simple Folded Corners can add them with ease~ Step by Step instructions included with the tool, Illustrations for both LEFT and Right-hand trimming. Approx. 4.5"