The Empire Em81.9 Magnetic Torpedo Levels Features E-Band Vials That Highlight The Meniscus Of The Bubble To Provide A Clear Reading At Plumb, Level, & 45 , High Visibility Vial Surrounds Provide Clear Viewing Of Vials And A Reinforced Aluminum Frame Allow Vials To Be Viewed From Above, A Magnetic Edge Frees The Users Hands When Working With Metal Surfaces, The Em81.9 Is Proudly MADE IN THE USA.