The Proportional Divider is a better solution for artists looking to achieve drawing and painting accuracy. This art tool allows you to transfer a drawing with the same scale. If you need to draw the subject a different size from the reference image this caliper tool is the best solution. Artists needs to approximate proportions and landmarks, and The Accurasee Proportional Divider does just that at a fraction of the $100-$300 price tag of high end dividers. Comes with detailed instructions as well as links to product demonstrations. The divider is made of plastic, but is a sturdy and has precise points for accurate measurements. This product is great for beginning and advanced artists. This is the perfect alternative to art projecting, gridding, or pencil measurement. This tool will make you a better artist. Our tool is guaranteed for 1 year! If anything happens or any part breaks, contact us, and we'll happily replace it. If you're not satisfied for any reason, go ahead and return it! We'll refund cost + shipping.