Features: More lightweight than box levels, I-beam levels are great for a variety of construction projects. Used by carpenters, electricians, plumbers, machinists, and many more tradesmen and professionals, these rugged, impact-resistant levels help ensure that everything is straight and plumb. Frame Material / Aluminum Length / 48 inch Magnetic/Nonmagnetic / Nonmagnetic Top Read / No Total Number of Vials / 3 Number of Plumb Vials / 2 Number of Level Vials / 1 Number of 30 Degree Vials / 0 Number of 45 Degree Vials / 0 Lighted Vials / No Number of V-Grooves / 0 Accuracy / 0.001 Vial Type / Barrel Vial Material / Acrylic Number of Magnets / 0 Magnet Type / None Color / Blue