NIST-Traceable Calibration Services for Electrical, Mechanical, Electromechanical, and Electronic Measuring Instruments in Louisville, KY

Electrical Test Instruments, LLC DBA ETI Precision (ETI) is a leader in the calibration and repair of test and measurement equipment, specializing in high-current and high-voltage instruments.

We provide onsite services in the Louisville region, minimizing the downtime of your critical instruments by offering calibration services at your facility. Our NIST-traceable calibration services encompass a wide variety of electrical, mechanical, radio frequency (RF), pressure, physical-dimensional, and environmental instrumentation. For more information

We are an ISO 9001:2015-certified, ISO/IEC 17025:2017-accredited, and ANSI/NCSL Z540-1-1994-accredited calibration laboratory. We offer MIL-STD-45562A-compliant calibrations and calibrations in accordance with 10 CFR Part 21 and 10 CR Part 50 Appendix B upon request.

Contact us today
Phone: 410-857-1880

Just some of the products and services we offer our Louisville customers:

  • Calibration of Test & Measurement Equipment
  • Torque Wrench Calibration
  • Oscilloscope Calibration
  • Thermocouple Calibrator Calibration
  • DLRO Calibration
  • Sound Level Meter Calibration
  • Digital Multimeter Calibration
  • Stopwatches & Timers
  • Process Calibrator Calibration
  • Frequency Counter Calibration
  • Ammeter & Shunt Calibration
  • Temperature Probe Calibration
  • IR Thermometer Calibration
  • Calibration of High Current – High Voltage Equipment:
  • High Voltage Detector Calibration
  • Earth Ground Tester Calibration
  • AC and DC voltages above 100kV
  • Hipot Tester Calibration
  • Megohmmeter Calibration
  • Single & Three Phase TTR Calibration
  • Primary Injection Test Set Calibration
  • Relay Test Set Calibration
  • Power Quality Analyzer Calibration
  • Secondary Test Set Calibration
  • Power Supply Calibration
  • Current & Potential Transformers


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NIST-Traceable Electrical Test Equipment Calibration Services in Louisville, Kentucky

Testing companies depend on ETI to take care of the yearly calibration programs for their electrical test equipment. Our NIST-traceable calibrations address DLRO’s, recloser test sets, oscilloscopes, circuit breaker testers, power analyzers, electrical clamps, megohmmeters, power factor test sets, multimeters, power supplies, and a wide array of other instruments. Our people can calibrate your instruments at your facility. Clients in Louisville select to have ETI work onsite for one-day turn-around of their equipment with very little downtime. ETI is an ISO 9001:2015-accredited calibration laboratory that is ANSI/NCSL Z540 and 10 CFR Part 50 Appendix B compliant. Universities, nuclear energy facilities, Fortune 500 companies, data centers, electrical testing businesses, municipalities, electrical contractors, and utilities of many sizes and shapes in Louisville, Kentucky trust in ETI as an essential calibration partner.

We Support Louisville Companies with NIST-Traceable Mechanical Test Equipment Calibration Services

ETI specializes in NIST-traceable calibration services for a variety of test equipment and mechanical measuring, including air pressure meters, tachometers, IR cameras, pressure controllers, micrometers, temperature meters, oil pressure meters, stopwatches, infrared inspection equipment, torque wrenches, calipers, plus everything in between. We provide calibration services at our customers’ business locations in Louisville, KY. ETI is an ISO 9001:2015-accredited calibration laboratory that is ANSI/NCSL Z540 and 10 CFR Part 50 Appendix B compliant. Data centers, nuclear energy facilities, universities, municipalities, electrical contractors, acceptance testing businesses, Fortune 500 companies, and utilities of all shapes and sizes in Louisville turn to ETI to take care of their mechanical test and measuring instrument calibration needs.

Test Equipment Repair Services for Louisville Companies

ETI services all major brand names and models of electrical testing instruments. Regardless of whether your Louisville facility’s instruments have been in service for many years or are brand new, our vast repair capabilities can lengthen the lifespan of your critical testing equipment. ETI’s maintenance and repair customer services include lab instruments, panel meters, multimeters, power quality meters, switchboard meters, analog instruments, clamp-on meters, oscilloscopes, power analyzers, frequency counters, digital instruments, and a wide variety of additional electrical and mechanical test equipment. Every one of our repairs include NIST-traceable calibration of your instruments, comprehensive documentation, competitive rates, and a swift turnaround. Louisville facilities rely on ETI to minimize their downtime and fix their critical test instruments.

Manufacturing Top Quality Circuit Breaker Testers and Power Supplies for Companies Around the Country

ETI makes and sells industry-leading electrical test equipment. We specialize in circuit breaker testing instruments, including circuit breaker test sets and power supplies. In addition, we are the U.S. reseller and service center for the entire line of Metrel electrical test instruments and products.

Our product line of top quality low voltage high current circuit breaker test sets provide for the full spectrum of electrical testing companies’ requirements. Our primary injection circuit breaker testers range from 250A to 6,000 A continuous output, with instant testing capabilities up to 60,000 A. Our PI-250B, PI-800, and PI-1600 test sets are portable, lightweight, durable, and modular while at the same time outperforming competing products’ capabilities at their price points. Our stationary PI-2500, PI-4000B, PI-5000, and PI-6000 circuit breaker test sets also lead the sector in capabilities and reliability for high current circuit breaker testing. All ETI circuit breaker testers feature our leading edge MAC-21 controller, a self-contained microprocessor-based metering and control package for primary injection testing. In addition, we retrofit other manufacturers’ circuit breaker test sets with our MAC-21 controller:

  • revamping the circuit breaker testing capabilities,
  • expanding their capabilities,
  • and extending their useful lives of our valued clients.

ETI’s high quality power supplies are lightweight, sturdy, and dependable. Our products are capable of outputting 7.2 A to 20A continuous at 140 VAC. ETI’s power supplies are ideal for circuit breaker charging motor testing.

As the U.S. reseller and authorized service center for Metrel products, ETI is undeniably a one-stop answer for electrical testing companies’ instrument requirements. We support and sell the whole line of Metrel offerings, which include DLRO’s, megohmmeters, and power analyzers. Our yearly repair services and calibration programs on every product we build and sell make ETI the trusted partner of hundreds of electrical testing companies, Fortune 500 companies, utilities, data centers, universities, and municipalities across the country.

Calibration and Repair Services in Louisville


About Louisville, KY

A Jefferson county city Louisville has a population of 766,757. The city is named after Louis xvii the French king. It is one of the oldest cities in the Appalachian region. It is well-known as the city of the legendary boxer Muhammad Ali. The renowned brand KFC the Kentucky Fried Chicken was born here. Another fortune 500 companies that were established here are Humana, Yum! Brands, Kindred Healthcare and more. The worldwide hub of UPS is headquartered at the Louisville Airport. It had a role to play in the American revolutionary war. It was a shipping port and acted as a point of escape for the slaves. It was a center of recruiting, supply, transportation and planning for various campaigns. It was a stronghold of the Union forces during the civil war. The famous Kentucky Derby was first held here. It was a center for factory war production during WWII.

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ETI Precision – Electrical Test Instruments supports customers in Louisville, Kentucky, including the following zip codes: 40018, 40023, 40025, 40027, 40041, 40056, 40059, 40118, 40177, 40201, 40202, 40203, 40204, 40205, 40206, 40207, 40208, 40209, 40210, 40211, 40212, 40213, 40214, 40215, 40216, 40217, 40218, 40219, 40220, 40221, 40222, 40223, 40225, 40228, 40229, 40231, 40232, 40233, 40241, 40242, 40243, 40245, 40250, 40251, 40255, 40258, 40259, 40261, 40266, 40268, 40270, 40272, 40280, 40281, 40282, 40283, 40285, 40287, 40289, 40290, 40291, 40292, 40293, 40294, 40295, 40296, 40297, 40298, 40299. Click here to return to our KY service area page.