The Performance Tool 1528 90° Post and Corner Level is the perfect tool for accurately aligning angled edges like posts or corners. With its easy attachment, including an included rubber band and integrated magnets, you can quickly and easily attach it to any post or corner. Featuring three bubble vials, this level is designed to ensure that all sides are true, giving you the confidence you need to tackle any job. Made from high-quality materials, this level is built to last and withstand even the toughest conditions on the job site. Measuring just 3 inches by 3 inches, it's compact and portable enough to carry in your pocket or tool bag, making it the perfect tool for any job, big or small.