Contractors that work with steel frequently want to have both hands free to position fit adjust and align metal materials. Rare earth magnets are a must. With its milled measuring surface and V-groove Stabila's Type 81SVREMW45 torpedo level holds firmly on all steel materials even round surfaces. This level has a vial that will measure horizontal with gradients of 1% and 2% a vertical vial and a third 45 degree vial. This torpedo level is practical precise convenient and robustly built. Brand Name: Stabila Length: 10 in. Material: Aluminum Magnetic: Yes Style: Type 81 SMW45 Level Type: Torpedo Product Type: Level Number of Vials: 3 vial Accuracy: 1/32 in. Color: Yellow Usage: Leveling Number in Package: 1 pc. Weight: 0.65 lb.