Calibration North America U.S. and Canada South America Brasil Europe Great Britain and Ireland Nordic Countries Italy Other Locations Contact your local sales and service office Your customers hold you responsible for the integrity of your test data. Don't leave your calibration up to just anyone. Calibration and verification testing are the only ways to ensure accuracy and repeatability in your testing systems. MTS can help. Calibration from MTS means: 100 percent accuracy, repeatability and traceability.