FEATURES Both metric and imperial measurements Self healing Double sided – one side metric (grey), the other imperial (pink) Sleek, modern design 1.6mm thickness 15°, 30°, 45°, 60°, 75° & 90° angles marked Perfect for use on the Height Adjustable Sewing & Cutting Table Please note: the 18″ x 30″ measurement indicates the size of the entire mat, edge to edge. The marked measurements measure 17″ x 29″.