O'Lipfa Lip Edge Ruler are crystal clear with large inch markings and lines that are easily visible against light and medium colors and patterns. Helpful in cuting strips, squares, triangles and diamonds. The first 5 inch is a detailed mini-ruler with 1/8 inch hash marks both horizontal and vertical. Perpendicular lines connect top and bottom markings every 1/4 inch. Acts like a T-square against the edge of a cutting mat and this edge will also help to eliminate slippage. 45 degree and 60 degree bias lines, in both directions for right or left handers. 5 x 24 inch.