EmploymentContact UsSite MapHOME

Premier Leader in Manufacturing the Highest Quality Plug Gages and Ring Gages, Dimensional Metrology Equipment & Instruments

At PMC Lone Star and PMC Mercury our goal is to provide our customers with the highest quality plug gages & ring gages, service, and on time delivery available in the industry. We strive to continually upgrade our manufacturing capabilities and improve our technical abilities through continuing education of our employees and implementation of the latest technology. Our motto is customer awareness and service. It is this kind of service that sets us apart from the competition.

Our Plug Gages & Ring Gage Services Include:

  • Accredited inspection facilities
  • Manufacture of fixed and ground limit plug and ring gages - plain and threaded
  • Dimensional metrology equipment such as the ContouReaderTM and SquareMasterTM
  • PMC Lone Star is licensed by API to manufacture gages to Spec Q1 and certify gages to API Spec 5B; 7 & 11B.
  • Provide full calibration and certification services through A2LA ISO 17025
  • PMC Lone Star and PMC Mercury provides calibration services and delivers products to our customers worldwide who are engaged in a broad range of industries, such as:
    • Machine tool
    • Automotive
    • Aerospace
    • Defense
    • Oil and gas exploration
    • Canning
    • Sports equipment
    • Various precision metal working industries
The Mission of PMC Lone Star and PMC Mercury is to continually improve our quality management system while providing ever increasing customer satisfaction.

Through the dedication and efforts of our management and our employees, PMC Lone Star and PMC Mercury has achieved our Mission of becoming top producers of the highest quality plug gages & ring gages in the industry and providers of top quality service for our customers.

rings gages, plug gages
Your one-stop-shopping source for all fixed and ground limit plug gages & ring gages.

rings gages, plug gages
API Gages
Unmatched accuracy and durability of plug gages & ring gages. Field proven for over half a century. Buttress Casing,EUE,NUT,8 Round Casing,Line Pipe,Extreme Line Casing, Regular Rotary,Numbered Connections,Internal Flush,Full Hole,Sucker Rod,Modified Acme,Thread Profiles and more!

rings gages, plug gages
ContouReader will check virtually any part profile, and the SquareMaster to measure part squareness, perpendicularity or height.

rings gages, plug gages
Calibration Laboratory Services
We hold an A2LA Accreditation to ISO/IEC 17025, Certificate No. 1697.01.

Home | Contact Us | Unified Reversible Thread Plug Gages | Unified Taperlock Thread Plug Gages | Unified Thread Ring Gages & Truncated Thread Setting Plug Gages
Unified HILO Thread Setting Plug Gages | HILO Takes The Guesswork Out Of Setting Adjustable Ring Gages | Metric Thread Gages | Master Setting Discs 1, 2 & 3
Cylindrical Reversible Pin Type/Taperlock/Trilock Plugs | Cylindrical Plain Rings Steel & Carbide | Reversible Trilock Design Cylindrical Plug Gages & Midget Thread Trilocks - Reversible | Pipe Thread Gages | Gaging Practices | Basic Dimensions of Taper Pipe Threads | API Thread Gages | SquareMaster | Metrology Equipment
Gage Calibration Services | International Gage Standards | Special Gages

Copyright © PMC Lonestar . All rights reserved.