Package & Size: You will recieve a hole spacing ruler. The size is about 100mm/3.94inches wide, 150mm/5.91inches long, 3mm/0.12inches thick. Our hole spacing rulers feature standard and metric size measurements to suit your preference. Instructions for use: The holes in the gauge are suitable for marking with a precision instrument such as an awl or needle. This provides more pitch variation, but the aperture is reduced to accommodate more sizes. Make sure your measurements are accurate. Please tear off the protective film on both sides of the ruler before use. Design for Precision: The ruler comes pre-marked with measurements and hole locations at regular intervals. The scales of our products are 3.2mm/4.8mm/6.4mm/9.5mm/13mm/16mm/19mm/22mm/25mm/29mm/32mm/35mm/38mm. These marks allow the craftsman to precisely place the punch at a specific distance from the edge of the leather, ensuring uniformity and consistency in the design. High Quality Material: Our hole spacing ruler is made of high-quality acrylic material, which is durable, strong and not easy to bend or damaged, ensuring you a long time of use. Transparent ruler makes measurement more accurate. Widely Used: In addition to the measurement marks, the ruler also has a variety of uniformly sized holes. These small holes serve as guides for drilling suture holes or lacing holes, eliminating the need for manual measurement and marking of hole locations.