STABILA STA-25360 - Level Mag Torpedo 360 degree VialContractors that work with steel frequently want to have both hands free to position, fit, adjust and align steel materials. Rare earth magnets are a must. With its milled measuring surface and V groove, it holds firmly on all steel materials especially rounded surfaces. This level has a vial that will measure horizontal level with gradients of 1% and 2%, a vertical plumb vial and a third 360 degree adjustable vial . This level is practical, precise,