Nitrogen gas is an industrial gas produced using air separation by mechanical means by taking atmospheric air (the air that you are breathing - 78% nitrogen & 20.9% oxygen), pressurizing it in an air compressor and then separating it with either a membrane or PSA (pressure swing adsorption) generator.

Wheel alignment, sometimes referred to as breaking or tracking, is part of standard automobile maintenance that consists of adjusting the angles of wheels to the car manufacturer specifications. ... Alignment angles can also be altered beyond the maker's specifications to obtain a specific handling characteristic.

A balancing machine is a measuring tool used for balancing rotating machine parts such as rotors for electric motors, fans, turbines, disc brakes, disc drives, propellers and [[pump]s. The machine usually consists of two rigid pedestals, with suspension and bearings on top supporting a mounting platform.