With over 35 years of experience, our technicians have provided precise calibration, instrument repair, and metrology database management to a diverse range of industries across the Centreville area.

Located in Gaithersburg, MD, our calibration laboratory—accredited to ISO/IEC 17025:2017, ANSI Z540-1, and Z540.3 standards—adheres to strict quality protocols. We perform all calibrations and repairs in line with manufacturer specifications to ensure your measurement tools remain reliable, repeatable, and audit-ready. Each calibration is accompanied by a certificate that confirms compliance with the rigorous standards set by the National Institute of Standards and Technology (NIST

Centreville, VA is a Northern Virginia community in western Fairfax County, with proximity to Dulles International Airport and a strong concentration of IT services, defense contractors, and government-adjacent businesses. Organizations in this area often require periodic calibration of their test and measurement equipment to support ISO 9001 certification, customer quality programs, and contractual compliance requirements.

Tra-Cal’s Gaithersburg laboratory is approximately 20 miles from Centreville, offering convenient access for Northern Virginia organizations seeking in-lab calibration with reliable turnaround. Our ISO/IEC 17025-accredited services cover electrical, dimensional, RF/microwave, pressure, and temperature instruments, with NIST-traceable documentation issued for every calibration to support quality recordkeeping and audit preparation.).