NIST-Traceable Calibration Services for Electrical, Mechanical, Electromechanical, and Electronic Measuring Instruments in Nashville, TN

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 Nashville 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 Nashville customers:

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


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ETI is a Top Provider of NIST-Traceable Calibration Services for Electrical Test Equipment in Nashville, TN

ETI offers NIST-traceable calibration services for many types of electrical test equipment, including oscilloscopes, circuit breaker testers, power analyzers, DLRO’s, electrical clamps, power factor test sets, recloser test sets, power supplies, multimeters, megohmmeters, and everything in between. We offer onsite calibration support services in our clients’ locations in Nashville, TN. Our on-site calibration customers in Nashville experience same-day turnaround of their test equipment at their private facilities with a minimum of downtime. ETI is an ISO 9001:2015-accredited calibration laboratory that is ANSI/NCSL Z540 and 10 CFR Part 50 Appendix B compliant. Fortune 500 companies, universities, nuclear energy facilities, electrical testing businesses, data centers, utilities, electrical contractors, and municipalities of all shapes and sizes in Nashville, TN rely on ETI to handle their electrical test equipment calibration programs.

Supporting Nashville Facilities with NIST-Traceable Mechanical Test Equipment Calibration Services

ETI specializes in NIST-traceable calibration services for a wide array of test equipment and mechanical measuring, including oil pressure meters, micrometers, infrared inspection equipment, stopwatches, pressure controllers, calipers, temperature meters, torque wrenches, tachometers, IR cameras, air pressure meters, and everything in between. We provide onsite services at our customers’ facilities in Nashville, TN. Our on-site calibration customers in Nashville appreciate same-day turnaround of their equipment over at their own facilities with marginal downtime. ETI is an ISO 9001:2015-accredited calibration laboratory that is ANSI/NCSL Z540 and 10 CFR Part 50 Appendix B compliant. Nuclear energy facilities, electrical contractors, acceptance testing businesses, universities, data centers, Fortune 500 companies, municipalities, and utilities of all types in Nashville, Tennessee turn to ETI to take care of their mechanical test and measuring instrument calibration needs.

We Extend the Life of Critical Test Instruments in Nashville, Tennessee through our Accredited Repair Services

ETI fixes all of the major brands and models of electrical testing instruments. Whether your Nashville facility’s instruments have been in service for decades or are recent to your company, our broad repair capabilities are able to prolong the life of your critical testing equipment. ETI’s repair services include clamp-on meters, power quality meters, oscilloscopes, lab instruments, power analyzers, digital instruments, frequency counters, switchboard meters, analog instruments, multimeters, panel meters, and a wide range of other mechanical and electrical test equipment. All of our repairs feature NIST-traceable calibration of your equipment, thorough documentation, competitive rates, and a fast turnaround. Nashville, Tennessee facilities rely on ETI to lessen their downtime and fix their critical test instruments.

ETI’s Circuit Breaker Testing Equipment is Used by Testing Companies and Industrial Facilities Nationwide

ETI makes and sells trusted electrical test equipment. Our Professionals specialize in circuit breaker testing instruments, including circuit breaker test sets and power supplies. We are also the United States service center and reseller 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 serve the full spectrum of electrical testing companies’ necessities. Our primary injection circuit breaker testers range from 250A to 6,000 A continuous output, with instantaneous testing capabilities up to 60,000 A. Our PI-250B, PI-800, and PI-1600 test sets are portable, modular, durable, and lightweight whilst 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 Electrical Test Instrument circuit breaker testers feature our cutting edge MAC-21 controller, which is a self-contained microprocessor-based metering and control package for primary injection testing. Additionally, we retrofit other manufacturers’ circuit breaker test sets with our MAC-21 controller:

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

ETI’s premium power supplies are lightweight, sturdy, and reliable. Our instruments are capable of outputting 7.2 A to 20A continuous at 140 VAC. ETI’s power supplies are optimal for circuit breaker charging motor testing.

As the U.S. authorized service center and reseller for Metrel, ETI is truly a one-stop-shop for electrical testing companies’ instrument needs. We sell and support the full line of Metrel products, such as DLRO’s, megohmmeters, and power analyzers. Our annual calibration programs and repair services on every product we manufacture and sell make ETI the go-to partner of hundreds of electrical testing companies, data centers, universities, Fortune 500 companies, utilities, and municipalities all over the country.

Calibration and Repair Services in Nashville


About Nashville, TN

A Davidson county city Nashville has a population of 670,820. This capital city of Tennessee is named in honor of Francis Nash an army general. It developed as a port and railroad center. The region took part in the American Revolutionary War and seceded to Tennessee post the war. It also played a great role in the Civil War. It grew as a manufacturing base later. It is a center for country music and nicknamed as the Music City. It is called the Athens of the South. Many private prisons are founded here. Healthcare, automotive, publishing, banking, and so on industrial sectors have developed and provided the base for its economy. Bridgestone Americas, Asurion, Captain D, Lifeway Christian, and many more entities hold their headquarters here. The first Prince’s Hot Chicken Shack was established in Jefferson street here. This famous street had been the destination for jazz and blues musicians.

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ETI Precision – Electrical Test Instruments supports customers in Nashville, Tennessee, including the following zip codes: 37011, 37013, 37015, 37024, 37027, 37072, 37076, 37080, 37086, 37115, 37116, 37122, 37135, 37138, 37143, 37189, 37201, 37202, 37203, 37204, 37205, 37206, 37207, 37208, 37209, 37210, 37211, 37212, 37213, 37214, 37215, 37216, 37217, 37218, 37219, 37220, 37221, 37222, 37224, 37227, 37228, 37229, 37230, 37232, 37234, 37235, 37236, 37238, 37240, 37241, 37242, 37243, 37244, 37246, 37250. Click here to return to our TN service area page.