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 Portsmouth 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

Portsmouth, VA is adjacent to the Norfolk Naval Shipyard, one of the largest ship repair facilities in the world, and sits at the center of the Hampton Roads defense and maritime industry cluster. Organizations in this area require calibrated instrumentation to support naval vessel maintenance, marine systems testing, and compliance with NAVSEA and MIL-SPEC quality frameworks.

Tra-Cal provides ISO/IEC 17025-accredited calibration services to Portsmouth-area clients with expertise in dimensional, electrical, pressure, and RF/microwave instruments used in naval, defense, and industrial applications. Our laboratory in Gaithersburg, MD issues NIST-traceable calibration certificates with complete traceability documentation, supporting customer quality programs and regulatory inspections.).