Johnson's easy to use LED billet level simplifies leveling by automatically illuminating the vial you need as you rotate the level. With a CNC machined aluminum frame and four crystal clear vials including a pitch vial, this level is highly accurate and durable, making it ideal for electricians, plumbers and HVAC contractors. Its powerful GripTight™ rare earth magnets hold to flat or round ferrous metal surfaces for convenient hands-free use. This level also includes machined vial openings for an accurate reading every time.