[Code of Federal Regulations] [Title 39, Volume 1] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 39CFR501.8] [Page 178] TITLE 39--POSTAL SERVICE CHAPTER I--UNITED STATES POSTAL SERVICE PART 501--AUTHORIZATION TO MANUFACTURE AND DISTRIBUTE POSTAGE METERS--Table of Contents Sec. 501.8 Submission of each model. Each meter model proposed for manufacture must be approved by the Postal Service after testing at the manufacturer's expense. A preliminary working model that meets the specifications in Sec. 501.6 may be submitted for tentative approval. No meter of any model may be distributed or used for postage payment until a complete unit made to production drawings and specifications is submitted, tested, and approved, unless authorized for preliminary field testing.