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, STABILAs Type 81 SV REM W45 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.