Swanson Tool Co 48" Aluminum Pro Grade Magnetic Box Beam Level Pro Series, Model BBL48M

48-inch length for extended reach and accuracy. Constructed from durable aluminum. Designed as a Pro Grade magnetic box beam level. Belongs to the Swanson Pro Series line. Identified by model number BBL48M. Features a unique Integrated Magnet System (IMS technology). Equipped with super strong rare earth magnets for a consistent hold. Built with a heavy-duty, precision-milled aluminum box frame. Engineered for maximum durability. Houses industrial strength acrylic block vials. Includes SUPERSHOCK end caps made from a proprietary polymer/rubber blend. End caps are engineered for ultimate impact resistance and extra shock absorption. A deep V-groove allows for working with both round stock and squared corners. Multi-ring block vials are designed to indicate drainage pitch for plumbers and landscapers. Vials provide accuracy to .00050 inches. Features ergonomic, rubberized grips for comfortable and easy handling.