Simplify angle measurements with Johnson's magnetic angle locator. Featuring a high-impact molded body and an extra-strong ceramic magnet, it effortlessly adheres to ferrous metal surfaces. The V-groove edge ensures a perfect fit on pipes and conduits, while easy-to-read increments display 0-90 degree in all four quadrants on a durable acrylic lens. For added convenience, one side has inch graduations and the other has metric graduations.