The Dressmaker’s Ruler is a versatile tool for precise sewing and crafting. Measuring 16 inches and and 40 cm, it features centering inch and centimeter markings, common seam allowances, 30degree, 45degree, and 60degree angle lines, and slots for easy marking. Adjust Patterns: Align the ruler with the marked line, select a slot, and draw a parallel line. Mark Placement: Use the slots or edge markings for equal spacing of buttons, buttonholes, and pockets. Transfer Markings: Use the slots to guide a tracing wheel for accurate pattern marking. Cut Angles: Align the 30degree, 45degree, or 60degree angle line with the fabric edge and cut along the ruler edge. Centering and Trim Placement: Use the centering guide for appliques and trims.