A trim panel assembly having a first housing, a second housing, and a pivotal light mechanism configured to swivel relative to the first and second housings. The method and apparatus generate the reference frequencies by generating generation frequencies by use of a frequency generated from the local oscillator, and generating adjustment frequencies for adjusting the generation frequency. This allows greater flexibility and range of motion, thus facilitating chiropractic treatment. The rate at which the movable device moves through the pipe is also determined so that the interior surface of the pipe is properly disinfected. A method for producing an alkanediol glycidyl ether acrylate, which comprises: a step wherein a vinyloxyalkyl glycidyl ether is subjected to a devinylation reaction in the presence of an acid catalyst and water; and a subsequent step wherein an esterification reaction is carried out. The mechanism has a horizontal conveyance guide unit for conveying a sheet in a substantially horizontal direction, and a vertical conveyance guide unit for conveying a sheet in a substantially vertical direction.