Founded in 1967, ATS is proud to be one of the most well-established testing, inspection, certification, and compliance providers in the United States. We understand the importance of keeping your business operations running smoothly, offering expedited service options for hundreds of our testing and analysis services. Our calibration laboratory is ISO 9001 certified and ISO 17025 accredited by the A2LA, ensuring the repeatability and accuracy of all calibrations performed. Get in touch with the proven calibration experts today by calling 1 (888) 287-5227 or submit a request form on this page for a free quote or more information on meter proving services.