Precon, Incorporated also manufactures new Precision Thread Ring and Plug Gages (gauges), "J" threads, Left Hand and Special Gages to your pitch diameter requirements. Our gage shop also includes Reconditioning and Certification Services for thread ring and plug gages. All of Precon's gages come with full Long Form Certification Cards. Certification lab to ANSI/NCSL Z540-1-1994, ISO 10012-1 Calibration System. We are currently working towards ISO 9001:2008 certification and have many processes, documents and proceedures already in place through our Quality Control Handbook.