Hand-made patchwork ruler, can be used to measure the seam allowance, draw parallel lines and seam allowance Made of high-quality aluminum and plastic, the notch on the ruler is one inch, and the scale on the bottom is millimeters and centimeters Can be used to measure the diameter of buttons, measure button diameter positioning and buttonholes, draw circles, etc. Sewing gauge with slider, allowing the gauge to remain in position to mark the drawing circle repeatedly Unique conversion design for feet and centimeters, making measurement more convenient Specification: Material: Aluminum, plastic Size(LxW): Approx. 15x1.7cm/5.91x0.67inch Package Includes: 1 Piece Sewing Measuring Gauge Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!