Features: The WESTWARD® nonmagnetic I-beam level features an aluminum frame with green acrylic vials. Top-read window and protective end caps. Frame Material / Aluminum Length / 24 in Magnetic/Nonmagnetic / Nonmagnetic Top Read / No Total Number of Vials / 3 Number of Plumb Vials / 1 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