Koala Tools - Mini Ring Ruler for Circle Templates and Surfaces, Circular Ruler with 1 to 3.5-inch Adjustable Diameter, Geometric Tool for Drawing Circles

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Nifty Ruler with an Adjustable Diameter - No need for circle stencils or a pivot-point compass with a dangerous needle. Our ingenious mathematical ruler comes with a 1 to 3.5-inch adjustable diameter, so you can draw perfect circles without the hassle of using other tools. Swift, Precise Measurements - You can never go wrong with your measurements while using this efficient drawing tool. Simply click its zero point end to your desired circle size, then it holds in place for quick measuring, marking, and forming. A Handy Art & Crafts Must-Have - You deserve high-precision drawing materials that are accessible anytime, anywhere. This compact and handy circle ruler will easily fit in your bag or drafting kit. Versatile Tool for Your Measuring Needs - Our mini circle drawing tool isn’t just for creating flawless circles. It also doubles as a 360-degree protractor for any creative projects, like sculpting, woodworking, and sewing. Flexible, Sturdy Drawing Ruler - Koala Tools’ Mini Ring Ruler is made of premium materials for long-lasting use. This flexible ruler works well with pencils, pens, markers, and more!