About IET Labs, Inc.

Our Mission

Since 1976, it has been IET Lab's mission to manufacturer very high-quality instruments at competitive prices while providing a level of service not often found in the industry. Our goal is to exceed your expectations.

In 2000, IET Labs acquired the GenRad standards, impedance decades, megohmmeters, digibridges, audio and strobe lines and now continues to manufacture, service and support these. More information on GenRad and historic GenRad products can be found at "GenRad history page "In the GenRad Tradition..." In 2006, IET acquired the esi resistance lines, thus proudly and successfully combining the two most important classic impedance companies with our own.

Our Satisfied Customers

What Clients Say

Thanks for the update and all the work you guys have done on the unit. You guys have been wonderful in the service you have provided since buying the unit.

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Patrick- ILSCO

High respect for the work done by your lab.

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You are the bearer of welcome news. I appreciate the heads up and am thankful that IET has provided an exceptional product.Thank you

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Jeremy-Kilgore Flares Company, LLC

A few weeks ago I sent a decade resistor box to you for repair and calibration. I picked it up from my admin office this morning and was pleased to find, along with the detailed calibration record and repair report, a signed note from the technician who did the work. This is thoroughly professional service.High quality is hard to beat. Thank you.

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Don - UAB Energy Management

I wanted to drop you a line to thank you and your team on the great job they are doing.In a time when LM needed some expert help and support Benjamin and your Engineering department stepped up and help us out.This is a ‘Job Well Done’ and it will not be forgotten.Thanks and have a Great Holiday.

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Edmundo - Lockheed Martin Space Systems Company

I wish all my Suppliers were as organized as IET!

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Lorrie- Shortridge Instruments


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Susanne- United Airlines

We have been your client for a long time, first as Quadtech equipment, now as IET.IET has been an excellent option that meets our measuring needs.During all this time we have only received an excellent attention and an outstanding technical support Thanks all your team.

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Ed - Cornell Dubilier Capacitors

The thoughtfulness and professionalism of all IET Labs staff is greatly appreciated.

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PL Alain-Laboratoire d'Étalonnage et Réparation IREQ

Those two items are on our radar sometime or another. I can’t promise anything due to our corporate ethics, but your companies expertise and exceptional customer service we receive rate you high on the top of my list.Thanks again

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Michael- Consumers Energy

Yes very thanks for your help, I wish all my vendors were like you.

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Gavin- St. Jude Medical

Happy Friday!Far as I know IET Labs does have one of the best if not the best calibration order set up.The most I like about your lab is you keep us updated in detail & ease of settiing up the RMA.I think I hardly need to contact you requesting for update (maybe once in a while, in case of additional repair is required).

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Marie- Japan Airlines

Thanks Laurie! I really appreciate how quick and easy you folks at IET make it for me to get a quote send in equipment. Working with you is always a pleasure.

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Karen- Martin Calibration

Ben,YOU ARE THE BEST EVER!!!!! Don’t know what I would do without you!!!!!!!! Thank you so very much!!!!!!!!!!!!!!!And YOU MAKE ME SMILE JHave a GREAT day!!!!!!!!!

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Monica- Tegam

Our History


Keeping the GenRad Tradition Alive

Melville Eastham Image

Melville Eastham, Founder of General Radio

General Radio was founded in 1915 and published its first catalog of instruments in 1916. Among the products listed were:

    • Precision Variable Air Condenser ($25.00)
    • Decade Resistance Box ($19.00)
    • Precision Variable Inductor ($24.00)
    • Absorption Wavemeter ($60.00).
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Eastham wanted to do more than just manufacture quality measuring instruments. He believed a manufacturing company should do many things for its employees, including:

    • Provide a short work week
    • Offer liberal vacation and holiday schedule, compatible with efficient operation
    • Gradual business growth financed from earnings
    • No layoffs or shutdowns for maximum job security
    • Profits should be shared among the stockholders, the management, and the employees.
    • GenRad also decided early on to sell its products directly to end users rather than only through distribution channels.

These were radical concepts in the industrial climate of 1915. IET Labs is proud to keep this legacy alive today.

Over 100 Years of Excellence in Metrology

By combining the many hundreds of man-years of engineering experience of GenRad, esi and IET, we have become the world's preeminent manufacturer of impedance instruments, offering from the most cost-effective to the most stable electrical standards.

IET Labs is small enough to offer the individual exceptional service each of our customers deserves, while large enough to offer the world's most complete impedance solutions with over 1300 different products.

Made in the U.S.A.

While many in the industry outsource not only manufacturing but engineering, IET is proud to claim that we manufacturer 98% of our products in the United States and almost all of our major components are manufactured in the United States.

What It’s Like Working with IET Labs

Our experienced engineering and service staff make it possible to offer:

    • Custom or products with combinations of functions; special ranges, ratings or accuracies.
    • Replacements for discontinued models from other manufacturers.
    • ISO-17025 accredited calibrations* and repairs on most products
    • Compliant with ISO-9001, ISO-10012, ANSI Z540-1-1994, and MIL-STD-45662A.
    • Applications and custom engineering readily available
    • Extensive library of applications notes and articles from GenRad, esi and IET

Our Scope of Accreditation

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* See IET Labs scope of accreditation Cert. No. 2073-01 for capabilities

See Feedback from some of our Satisfied Customers.