Appeal inspection or grading may be obtained by filing a request therefore, (a) with the Administrator, (b) with the inspector or grader who issued the inspection or grading certificate or report with respect to which the appeal service is requested, or (c) with the supervisor of such inspector or grader. The application for appeal inspection or grading shall state the reasons therefore, and may be accompanied by a copy of the aforesaid inspection or grading certificate or report or any other information the applicant may have secured regarding the product or the service from which the appeal is requested. Such application may be made orally (in person or by telephone), in writing, or by telegraph. If made orally, written confirmation may be required.