Equipment calibration, repair & sales

Calibration Services

We come to you
Offering simplified on-site calibrations in all 50 states for electrical contractors, data centers, & more. Our unique capabilities include high-current & high-voltage equipment.
Explore Calibration

Our Products

Precision equipment for industry
We build intuitive and rugged high-current circuit breaker testers and AC/DC variable power supplies. Our technical support team is readily available if you require assistance.
Browse Our Products

Repair & Retrofit Services

Minimize downtime of critical instruments
We repair a wide range of electrical test equipment. Our retrofit services for high-current circuit breaker testers extend the productive life of these expensive & critical assets.
Review Capabilities
ETI Precision
“

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

Featured Product

ACDC-10
Versatile and intuitive 10-amp AC and DC variable power supply.
Learn More About This Product
40,000+
instruments calibrated across 41 states over the past year.
Electrical Test Instruments, LLC
D/B/A ETI Precision
8430 Spires Way, Suite A
Frederick, MD 21701
Careers

© 2024 ETI Precision | Opus Design – Boston Web Design
Phone: 410-857-1880
Fax: 410-857-1387
Email us