The Empire Em81.12 Magnetic Tool Box Level Features E-Band™ Vials That Highlight The Meniscus Of The Bubble To Provide A Clear Reading At Plumb, Level, & 45�, A Vari-Pitch™ Vial Reads Pitch In 1/8", 1/4", 3/8", And 1/2" Per Foot Of Horizontal Run Of The Working Material, High Visibility Vial Surrounds Provide Clear Viewing Of Vials, A Magnetic Edge Frees The Users Hands When Working With Metal Surfaces And A Reinforced Aluminum Frame With Top Read Windows Allow Vials To Be Viewed From Above, The Em81.12 Is Proudly Made In The USA.