A system and methods for controlling operation of hydraulic cylinders includes monitoring position of the cylinders relative to one another, and correction of misalignment of the cylinders should they become misaligned. Database material may be text, computer programs, graphics, audio, spreadsheets, or any other material which may be stored and indexed. A processor is coupled to the camera and arranged to control the camera and receive the image obtained thereby. As a result, an insulating film in which the amount of impurities is reduced can be formed. The base can define the area of the coated surface under test. A conducting element is electrically connected to a second terminal of the measuring instrument and is moved into contact with the tread of the tires.