NIST-Traceable Calibration Services for Electrical, Mechanical, Electromechanical, and Electronic Measuring Instruments in Charleston, SC

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 Charleston 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 Charleston customers:

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


On This Page

Supporting Charleston Facilities with our NIST-Traceable Electrical Test Equipment Calibration Services

Testing companies rely on ETI to take care of the yearly calibration programs of their electrical test equipment. Our NIST-traceable calibrations cover circuit breaker testers, recloser test sets, electrical clamps, oscilloscopes, power factor test sets, multimeters, power analyzers, DLRO’s, megohmmeters, power supplies, and a variety of additional instruments. Our team can calibrate your instruments onsite at your location. Companies in Charleston, SC select to have ETI come onsite for the same-day turn-around of their equipment with minimal downtime. In addition, we offer a fast track service for Charleston clients that may need quick turn-around of their equipment. 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 many sizes and shapes in Charleston, South Carolina rely on ETI as an integral calibration partner.

ETI is a Leading Provider of NIST-Traceable Calibration Services for Mechanical Instruments in Charleston, South Carolina

ETI specializes in NIST-traceable calibration services for a wide range of test equipment and mechanical measuring, including calipers, IR cameras, oil pressure meters, infrared inspection equipment, stopwatches, air pressure meters, pressure controllers, micrometers, tachometers, temperature meters, torque wrenches, plus everything in between. We provide calibration services at our clients’ facilities in Charleston, SC. Our onsite calibration customers in Charleston appreciate same-day turnaround of their equipment over at their own facilities with hardly any 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 Charleston count on ETI to handle their mechanical test and measuring instrument calibration needs.

How We Extend the Life of Critical Test Instruments in Charleston, SC with our Repair Services

ETI services all major brand names and models of electrical testing instruments. Whether your Charleston facility’s instruments have been in service for decades or are recent to your company, our broad repair capabilities can prolong the lifespan of your essential testing equipment. ETI’s 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 wide variety of other mechanical and electrical test equipment. Every one of our repairs includes NIST-traceable calibration of your equipment, comprehensive documentation, competitive pricing, and a swift turnaround. Charleston facilities count on ETI to lessen their downtime and fix their critical test instruments.

Electrical Test Intrument’s Circuit Breaker Testing Equipment is Counted On by Testing Companies as well as Industrial Facilities Around the United States

ETI manufactures and retails industry-leading electrical test equipment. We provide services for circuit breaker testing instruments, which include circuit breaker test sets and power supplies. In addition, we are the U.S. service center and reseller for the full line of Metrel electrical test instruments and products.

Our product line of high-quality low voltage high current circuit breaker test sets cater to the entire 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 best the industry 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. We also 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 light-weight, sturdy, and dependable. Our products 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. reseller and authorized service center for Metrel, ETI is genuinely a one-stop answer for electrical testing companies’ instrument requirements. We support and sell the whole line of Metrel products, including megohmmeters, DLRO’s, and power analyzers. Our yearly repair services and calibration programs on all products we produce and sell make ETI the go-to partner of hundreds of electrical testing companies, data centers, universities, Fortune 500 companies, utilities, and municipalities across the country.

Calibration and Repair Services in Charleston


About Charleston, SC

A Charleston county city Charleston has a population of 137,566. Originally named Charles town it was considered as one of the key cities in the British colonization of America. It had played a prominent role in the slave trade in the USA. It was the center of the American Civil War. It was an industrial center. Pine timber, tobacco, and pitch for ships were the main items of commerce here. Deerskin trade also thrived here once. It then ventured into rice growing which brought it a lot of fame and was called the Rice Coast. It also was a huge indigo growing center. It played a major role in the American Revolutionary War. It has a robust music culture and is home to many musicians. This city named as the holy city is considered one of the best cities in the world today and is also a well-loved tourist destination.

Are you new to Charleston? Check out these local favorites:

Related Charleston, SC Calibration & Repair Searches

  • calibration laboratory near me Charleston SC
  • electrical test equipment in Charleston
  • Charleston calibration services
  • electronic instrument calibration Charleston SC
  • mechanical instrument calibration in Charleston
  • Charleston instrument repair services
  • mechanical instrument repair Charleston SC
  • NIST traceable calibration in Charleston
  • Charleston calibration facility near
  • air & oil pressure meters Charleston SC
  • vacuum gauges in Charleston
  • Charleston electronics store
  • electrical test meter calibration Charleston SC
  • pressure controllers & recorders in Charleston
  • Charleston temperature chambers & controllers
  • breaker test set Charleston SC

ETI Precision – Electrical Test Instruments supports customers in Charleston, South Carolina, including the following zip codes: 29401, 29402, 29403, 29405, 29407, 29409, 29412, 29413, 29414, 29417, 29424, 29425, 29455, 29492. Click here to return to our SC service area page.