Why ETI

Electrical Test Instruments is a leader in the calibration, repair, and sale of test and measurement equipment. Customer service sets us apart: every member of our team is committed to our customers’ success. We have been providing outstanding customer service with a relentless focus on quality since 1992.

Specializing in Nationwide Onsite Service

We come to you, minimizing the downtime of your critical instruments by offering calibration services at your facility. As a manufacturer of circuit breaker testers and ground-fault testing equipment, we have unique expertise and proprietary technology for calibrating high-current ammeters. We offer a broad range of capabilities within electrical, torque, pressure, physical, dimensional, RF, and microwave calibration services. ETI is also able to repair and retrofit a wide variety of test and measurement instruments. We are the only authorized service center for Metrel equipment in the country, and our emergency onsite repair services are available for your urgent equipment issues.

Our company has worked with ETI for over twenty years, during this time we have found them to be a reliable source of calibration and repair services as well as a supplier for some of our test equipment. ETI routinely services over 1,500 assets at 10+ locations.

Schneider Electric

Manufacturing Rugged & Durable Breaker Testers

ETI is a reliable partner for high-current circuit breaker testers and ground fault testing equipment. Our rugged primary injection high-current circuit breaker testers are trusted by electrical testing companies and industry worldwide. We offer outstanding customer service, a two-year warranty on all new ETI products, and exceptional quality.

ETI prides itself on responsive customer service. Whether requiring technical assistance, product support, remote troubleshooting, or onsite service, our customers turn to ETI for their critical test and measurement instrument needs.


Electrical Test Instruments, LLC
1301 Avondale Rd #J, New Windsor, MD 21776
Phone: 410-857-1880
Fax: 410-857-1387
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