Features: 1.Premium material: Made of high quality acrylic material, durable and long lasting. 2.Easy to operation:Locate the spot that you want to center your circle from, use a push pin or brad nail in the center hole of the center finder/compass to hold it in place. Choose the diameter circle you would like to mark, then using a fine pointed pencil or scoring tool to mark your circle. 3.Visible Design: Transparant body, make you easy to locate and draw holes with corresponding, clear index marks for drawing circles. 4.Wide Application: Wherever you need a circle drawn or need to find center on irregularly shaped items this center finder/compass is the tool to reach for. 5.100% Satisfaction: If you have any question, please feel free to contact us.We will try out best to help you. Notice: Please allow 1-3cm deviation due to manual measurement Actual color may be slightly different from the image due to different monitor and light effect Description: Material:Acrylic Size:10 inch includes: 1x Sewing Ruler Template