Trescal, Inc. is A2LA Accredited to ISO/IEC 17025 standards. Our NIST- traceable labs comprise one of the largest, most exper ... ienced calibration and repair facilities of our kind. We have been in business for more than 20 years and maintain state-of-the-art equipment and processes throughout each lab. Our commitment to precision and technique means that you can rest assured that we are not only on top of today's latest standards and measurement practices, but also that we will be a leader in the practices of tomorrow. Headquartered in Hartland MI with locations in Atlanta, Baltimore, Cleveland, Charlotte, Boston, Chicago, Dallas, Mobile, Newark, Santa Clara, Miami, Elizabeth City , Honolulu, Long Island, Washington DC, Oshkosh, Milwaukee, Orlando, Pleasanton, and Phoenix AZ. read more