Calibration & Metrology Service
UII operates ISO/IEC 17025:2017-accredited primary standards and accredited laboratories across the United States. Its Primary Standards Laboratory has supported the U.S. and U.K. TRIDENT Inter-Laboratory Comparison Program as the control lab, managing more than 600,000 calibration records for the U.S. Navy’s TRIDENT program. With expertise across 18+ measurement disciplines and an average team experience of over 25 years, UII delivers traceable, mission-critical calibration services supporting defense, transit, manufacturing, and automotive sectors.
Accredited
Calibration Services
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Our electrical and electronic calibration capabilities include AC and DC voltage, current, resistance, low-frequency capacitance, phase meters, and voltage transformers.
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Our mechanical calibration capabilities include compression and tension force measurements using load cells, covering ranges from approximately 2.2 kN to 445 kN.
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Our time and frequency calibration capabilities include frequency measurement and dissemination from 0 to 10 MHz, traceable to national time and frequency standards.
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Our temperature and pressure calibration capabilities include SPRT resistance thermometry from −196 °C to 500 °C, as well as pneumatic and hydraulic pressure generation up to approximately 69 MPa.
Performance Built on Precision
U.S. Navy SSP TMDE Support
UII supports Strategic Systems Programs (SSP) by maintaining mission-critical Test, Measurement, and Diagnostic Equipment (TMDE) to ensure accuracy, reliability, and readiness. Our team provides program management, calibration support, logistics coordination, and technical documentation for Navy calibration and lifecycle support programs. This work supports OHIO-class submarines, UK TRIDENT, and Strategic Systems requirements by ensuring standards, records, and metrology resources remain aligned with mission needs. Through disciplined technical support and quality assurance, we strengthen METCAL operations and defense system readiness.
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U.S. Navy Education & Training
UII supports Naval Education Training Command (NETC) by delivering calibration and technical services across training sites to ensure TMDE remains accurate, compliant, and mission-ready. Our team provides calibration, preventive maintenance, quality assurance, and metrology support for training equipment. We maintain traceable records and ensure compliance with Navy and DoD requirements. Through consistent execution and quality control, we help sustain reliable training environments and operational readiness.
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NSWC Philadelphia Calibration Services
UII supports Naval Surface Warfare Center (NSWC) Philadelphia Division by providing calibration and technical support to ensure TMDE remains accurate, compliant, and ready for fleet use. Our team supports calibration procedures, precision measurement, logistics, and program coordination for shipboard and shore-based systems. This work ensures alignment with NAVSEA requirements and sustained platform performance. Through technical expertise and disciplined execution, we help improve fleet readiness and system reliability.
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