Calibration + Service


Your competent partner all around material testing devices – especially hardness tester, their sales, calibration (DIN, ASTM- and factory calibration), service, repair and upgrading.


24-Hour-Professional service

A larger number of our customers work in 3-shift operations, mainly 7 days a week and depend on a continuous control of their components/samples/workpieces. Avoidable costs occur particularly at weekends or after the official business opening hours.

We are there for you, 365 days a year, 24/7.

A comprehensive range of own products, such as for example, Vickers hardness testing machines or our Video-Meassuring-System (VMS), offer you the opportunity to turn your laboratory into the Laboratory 2019. Irrespective of whether it concerns testing devices, sample preparations, accessories or spare parts. You can get everything from one source – as it is most important to have a reliable partner with regard to quality assurance and for carrying out material testing successfully.



As early as 1994, Werkstoffprüfung Brück (now: 3-Rath Kalibrier+Prüftechnik) was certified for the first time according to DIN EN ISO 9000 and has been accredited according to DIN EN ISO 17025 since 2002. This was followed by the accreditation by the DAkkS (German national accreditation body) in 2011 under Number D-K-15158-01-00.

The current accreditation certificate is available in our media centre for you to download.

In addition to our services we also have an extensive supply programme with products all around material testing. A comprehensive warehouse with spare parts and accessories allows us to often minimise delivery times and thus also the tooling time.



Maintenance, repair, upgrades and calibrations (DIN/ASTM and works calibrations) are carried out on all hardness testing machines on the market, irrespective of the type of manufacturer.

3-Rath GmbH & Co. KG is accredited according to DIN EN ISO/IEC 17025:2018 (german).
By having a comprehensive range of accessories (e.g. hardness test blocks, diamond indenters… and many more), we are able to react to your requests fast and flexible.

But we are particularly proud of the fact that our customers mention our reliability time and again – most of our customers have been looked after by us for more than 20 years.