ETI Precision | Electrical Calibration

At ETI Precision, our mission is to ensure the safety and reliability of test equipment used by electrical contractors nationwide. We offer simplified onsite electrical equipment calibration to all 50 states, minimizing the time your equipment is out of commission or in a calibration lab.

Call for a quote today 410-857-1880

Experts in High-Current & High Voltage Calibration

Our unique capabilities include high-current breaker testers as well as AC and DC voltages in excess of 100kV. We also developed the proprietary ETI BTSA-3 Breaker Analyzer/Timer, an extremely accurate timer for high-current ammeters. ETI has specialized in electrical equipment calibration services for over 25 years.


Contact ETI Precision for a quote or more information.

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Equipment Serviced
Unique Capabilities

We travel to all 50 states, serving facilities with anywhere from 5 to 500 pieces of equipment.

Places We Serve

As your partner, ETI Precision is here to make sure your critical equipment is accurate and reliable through annual calibrations. Whether you want to to send calibration equipment to our calibration labs or have our experts handle onsite at your facility, our experts keep your equipment in top shape.

Our calibration services can be tailored to fit your needs.

  • NIST-traceable Certificates of Calibration as standard service
  • ISO/IEC 17025:2017 accredited calibrations within our scope of accreditation upon request
  • As-found / as-left test report data available upon request
  • ANSI/NCSL Z540-1-1994-compliant calibrations upon request
  • MIL-STD-45562A-compliant calibration available upon request
  • Calibration in accordance with 10 CFR Part 21 and 10 CFR Part 50 Appendix B available upon request
  • Expedited and emergency service available upon request
  • Full management of multi-location annual calibration programs available

Potomac Testing has been using ETI for over 25 years. We rely on them for all of our calibrations and repairs, ensuring our equipment is maintained properly and compliant with NETA and PEARL requirements. ETI provides our team with the best customer service available.

Potomac Testing

Why ETI?

High Caliber Service

Our team of experienced technicians is available where you need them to ensure you’re able to perform the work you do every day without interruption or delay. We view our customers as partners and go above and beyond to provide quick and reliable support. Whether it’s troubleshooting with your team over the phone, performing our nationwide calibration services, or repairing and retrofitting equipment, we strive to provide the highest level of service and support. Our internal culture of service carries over into all of our interactions.

Minimize Downtime
Our dedication to minimizing equipment downtime is evident in everything we do at ETI Precision. We offer simplified, onsite calibrations in all 50 states, minimizing the time your equipment is out of commission, keeping your projects on schedule and allowing you to best support your customers.

Comprehensive Solutions
At ETI Precision, our product and service offerings all work together toward the unified goal of promoting the safety and reliability of your test and measurement equipment. Our routine calibration services give you confidence in your measurements. Our rugged high-current circuit breaker testers and power supplies are built to last, keeping your team up and running. Lastly, ETI’s expansive instrument repair and breaker tester retrofit services extend the life of your critical equipment.

Accessible & Adaptable

When it comes to our products and services, we don’t overcomplicate them. Technicians find our products easy to use and our team is available to support you whether you use our products or not. Our focus is straightforward – deliver high performance, accuracy, and durability to our partners through our products and services.

Request A Quote

Contact ETI Precision for a quote or more information.

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