The level is one of the most important tools when building and setting up racks. Establishing a level frame is necessary to build a stable and rock solid foundation. The SC-GMLVL Magnetic Level will help to cut down set up time and increase stability by helping to ensure that all connecting bars and clamps are in the correct position. Being a 3-way level, you can measure in 3 different positions; horizontal, vertical, and 45 degrees. Also, the magnetic strip allows you to measure the level of a bar hands free. · Great tool that helps cut down set up time in establishing a stable and rock solid base · 3-way leveling positions - horizontal, vertical, and 45-degrees · The magnetic strip allows you to measure the level of a bar hands free · Necessary for rack builders