NIST-Traceable Calibration Services for Electrical, Mechanical, Electromechanical, and Electronic Measuring Instruments in Raleigh, NC

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 Raleigh 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 Raleigh customers:

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


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ETI is a Premier Supplier of NIST-Traceable Calibration Services for Electrical Test Equipment in Raleigh, NC

Testing companies trust ETI to run the annual calibration programs of their electrical test equipment. Our NIST-traceable calibrations address circuit breaker testers, recloser test sets, electrical clamps, oscilloscopes, power factor test sets, multimeters, power analyzers, DLRO’s, megohmmeters, power supplies, and a vast range of other instruments. We can calibrate your equipment at your location or remotely at ETI’s calibration lab. Customers in Raleigh, NC select to have ETI work onsite for one-day turnaround of their test 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, electrical contractors, Fortune 500 companies, utilities, data centers, nuclear energy facilities, electrical testing businesses, and municipalities of all shapes and sizes in Raleigh, North Carolina rely on ETI as a critical calibration partner.

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

ETI offers NIST-traceable calibration services for a variety of mechanical measuring and test equipment, 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 on-site calibration services at our clients’ business locations in Raleigh, NC. Our on-site calibration customers in Raleigh experience same-day turnaround of their equipment over at their private facilities 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. Acceptance testing businesses, municipalities, data centers, nuclear energy facilities, utilities, universities, Fortune 500 companies, and electrical contractors of all types in Raleigh, North Carolina rely on ETI to take care of their measuring instrument and mechanical test calibration programs.

Test Equipment Repair Services for Raleigh, North Carolina Businesses

ETI services all major brand names and models of electrical testing instruments. Regardless of whether your Raleigh facility’s instruments have been in operation for many years or are recent to your company, our vast repair capabilities can lengthen the life of your critical testing equipment. ETI’s repair customer services include analog instruments, digital instruments, lab instruments, panel meters, switchboard meters, multimeters, clamp-on meters, power quality meters, power analyzers, oscilloscopes, frequency counters, and a variety of other mechanical and electrical test equipment. Every one of our repairs includes NIST-traceable calibration of your equipment, detailed documentation, competitive rates, and a swift turnaround. Raleigh facilities turn to ETI to decrease their downtime and mend their critical test instruments.

ETI’s Circuit Breaker Testing Equipment is Used by Testing Companies as well as Industrial Facilities Around the United States

ETI makes and retails trusted electrical test equipment. Our Professionals specialize in circuit breaker testing instruments, such as circuit breaker test sets and power supplies. In addition, we are the United States reseller and service center for the complete 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’ needs. 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 modular, portable, 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 market in capabilities and reliability for high current circuit breaker testing. All Electrical Test Instrument circuit breaker testers incorporate our state-of-the-art 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 light-weight, 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 United States reseller and authorized service center for Metrel, ETI is truly a one-stop-shop for electrical testing companies’ instrument needs. We support and sell the entire line of Metrel offerings, including DLRO’s, megohmmeters, and power analyzers. Our annual calibration programs and repair services on all products we build and sell make ETI the trusted partner of hundreds of electrical testing companies, Fortune 500 companies, utilities, data centers, universities, and municipalities all over the country.

Calibration and Repair Services in Raleigh


About Raleigh, NC

A Wake County city Raleigh has a population of 474,069. This capital city of the state of North Carolina is known as the city of oaks. It is named in honor of Sir Walter Raleigh who established the Roanoke Colony. This is one of the planned cities of the USA. It was planned as the region was chosen as the state capital. Though it did not take an active part in the Civil War it was captured by the Union Forces. This affected its economy but its growth was fast. Previously it was an agriculture-based economy. The first school for the deaf and blind for black people was established here in the nation. A free black community was established and job opportunities and education were promoted for this community. It created a favorable business climate and also promoted a cultural atmosphere. The quality of life in the city was valued.

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ETI Precision – Electrical Test Instruments supports customers in Raleigh, North Carolina, including the following zip codes: 27513, 27545, 27560, 27601, 27602, 27603, 27604, 27605, 27606, 27607, 27608, 27609, 27610, 27611, 27612, 27613, 27614, 27615, 27616, 27617, 27619, 27620, 27621, 27622, 27624, 27625, 27626, 27627, 27628, 27629, 27634, 27635, 27636, 27640, 27650, 27656, 27658, 27661, 27668, 27675, 27676, 27690, 27695, 27697, 27698. Click here to return to our NC service area page.