Thread Gage Calibration (TGC) is based in Arizona and has been the Southwest leader in thread gage calibration and the production of critical threaded parts since 1956. With over 150 years of combined expertise in solving the unique challenges of precision threading, TGC specializes in thread gage, plug, and ring calibration services. With the most advanced operating systems in the industry, TGC completes thread gage calibrations in just 7 business days, among the fastest turnaround times available. In addition to calibration, we distribute new thread plug and ring gages. Our extensive supply chain allows us to help you source non-standard thread gages, offering efficient solutions for even the most specialized requirements.