Description: [Material]The curtain ruler is made of steel, ensuring durability and longevity, resistance to wear and tear. [Easy to Use]This tool simplifies the process of making curtains by helping you create multiple equal distances effortlessly, ideal for both professional tailors and DIY enthusiasts alike. [Flexible and Expandable]Expandable sewing gauge with an adjustable range from 7.7cm to 62cm, making it versatile for various curtain sizes. [Expanding Sewing Gauge] Curtain Equal Division Ruler is a must have tool for curtain making. Great for creating evenly spaced holes and patterns on your curtains. [Wide Application]This sewing gauge can be used to quickly and accurately place buttons, hooks, skirt pleats, etc. Widely used for curtain making, clothing, crafts and more. Suitable for curtain shops or household use. Specification: Material: Steel Size Chart: 16cmx7.7cm/6.30inchx3.03inch Expanding: 7.7cm-62cm/3.03inch-24.41inch Package Includes: 1 Piece Sewing Gauge Sewing Gauge Ruler for Button Guide Expanding. Button Spacer Pleats Equidistant Measuring Tool. Buttonhole Spacer Quilting DIY Curtain Accessory. Crafting Marking Button Holes Uniform Scale. Drapery Window Curtain Grommet Making Ruler.