Servicing Reston, Vienna, Herndon, Tysons, McLean, Chantilly, & Springfield, VA.

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 Fairfax County 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).

Fairfax County, VA is the largest jurisdiction by population in the Washington D.C. metro area and one of the highest concentrations of federal contractors, technology firms, and defense-related organizations in the country. Areas such as Tysons Corner, McLean, Chantilly, and Springfield host a dense network of IT, intelligence, aerospace, and defense companies that maintain RF/microwave, electronic, timing, and dimensional measurement instruments requiring regular accredited calibration for program compliance and quality assurance.

Tra-Cal’s Gaithersburg laboratory is approximately 25–35 miles from most Fairfax County locations via I-66 or the Capital Beltway. We provide scheduled pickup and delivery throughout the county, and our onsite calibration service is available for facilities where equipment cannot be transported or security protocols require on-premises service. Every calibration is backed by our ISO/IEC 17025 accreditation with full NIST-traceable documentation supporting ISO 9001, AS9100, CMMC, and federal quality requirements.