Half a century of INGUN


The foundation for a success story is laid.

1971 Werner H. Heilmann and Wolfgang Karl found INGUN (INGenieur UNion) - engineer union - with 7 employees in Constance, Southern Germany

along with the founding of the location INGUN Switzerland in Kreuzlingen.

the two founders


The production of spring-loaded test probes begins. Production of the first test fixtures systems in the Radolfzell workshop 20 kilometres from Constance.


INGUN participates in electronica – the leading trade fair in electronics manufacturing – for the first time.


The company moves to a new building at 162 Max-Stromeyer-Straße, Constance. The location still serves as the headquarters of INGUN Prüfmittelbau GmbH today.


The assembly of the test probes is now fully automatic.


Michael Eisele becomes a member of the management team.


Founding of the INGUN UK location.


INGUN E-TYPE® becomes a registered brand name.


Founding of the INGUN Mexico location. INGUN is already represented in 28 countries worldwide.


Founding of the INGUN Benelux location.


Introduction of counterfeit protection for spring-loaded test probes.


Armin Karl, son of the company founder Wolfgang Karl, takes over the management of INGUN Prüfmittelbau GmbH and Wolfgang Karl moves to the supervisory board.


Development of the first radio frequency probe HFS-865 to measure up to 12 GHz.


Expansion of the production area in Constance by 2,200 square metres.


40 years of INGUN

We are represented in 43 countries worldwide.


Jochen Müller joins the management. The INGUN USA location was also founded this year.


Founding of the INGUN India location.


Founding of the INGUN China location.


Founding of the INGUN Spain, INGUN Korea, and INGUN Turkey locations .


Founding of the INGUN Southeast Asia and INGUN Portugal locations.


Over 400 employees work for INGUN worldwide.


Founding of the INGUN Morocco location and beginning of direct sales in Eastern Europe.


Founding of the INGUN Brazil und INGUN Israel locations.


INGUN has over 40 of its own locations and is represented in over 65 countries.


Half a century of INGUN -
50 years of expertise in test technology

We combine tradition & innovation

with a passion for technology & progress.

50 years of expertise & competent employees are the key to our success,

and make us a Partner for Future Technology.

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INGUN is a pioneer of 5G

Partner for Future Technology

We always have the right contacting solution

for a wide range of industries

Medical technology

We save lives because our products ensure the reliability of medical technology.

Aviation and aerospace

We are advancing into new worlds; our technology is turning today's visions into tomorrow's reality.


We connect billions of people & machines with our contacting solutions.

Renewable energies

We are creating new opportunities for future generations, because our technology is making the energy revolution a success.


As experts for radio frequency and high current solutions, we make autonomous mobility possible.

Simplify your fixture assembly.

Click. Fit. Contact.

Discover our product range
in the new online shop now.

  • Explore our new website with online shop *

    and benefit from 50 years of expertise!
    * Only in the EU (except France).

    • Test probes
    • Test fixture kits
    • Customising accessories 
    • Test probes
    • Test fixture kits
    • Customising accessories

Celebrate with us!

Register in our new online shop and we will give you a 5% discount off your first online order when you use the code

"VerifiedByINGUN" *

* Valid until 31.03.2022 and only redeemable once from a minimum order value of 50 Euros for orders within the EU.

Go to online shop

Here's to the next 50 years!

Committed to our German roots, our passion for technology and progress makes us at home worldwide.

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