Provider Information, Imprint

Site Notice

Information provided according to Sec. 5 German Telemedia Act (TMG):

DIATEST Hermann Költgen GmbH
Schottener Weg 6
64289 Darmstadt

Represented by:
CEOs: Gabriela Orio, Dipl.-Ing. Florian Orio

+49 6151 979 0
+49 6151 979 111

Register entry:
Entry in the Handelsregister
Registering court: Amtsgericht Darmstadt
Registration number: HRB2416
WEEE-Reg.-Nr. DE 62711461

VAT-ID number according to Sec. 27 a German Value Added Tax Act: DE111635884

Konzept, Gestaltung und Umsetzung:
OX.11 Agentur für Visualisierung und Kommunikation. Leimen und Darmstadt

Dispute resolution
We do not take part in online dispute resolutions at consumer arbitration boards.

Liability for Contents
As service providers, we are liable for own contents of these websites according to Sec. 7, paragraph 1 German Telemedia Act (TMG). However, according to Sec. 8 to 10 German Telemedia Act (TMG), service providers are not obligated to permanently monitor submitted or stored information or to search for evidences that indicate illegal activities. Legal obligations to removing information or to blocking the use of information remain unchallenged. In this case, liability is only possible at the time of knowledge about a specific violation of law. Illegal contents will be removed immediately at the time we get knowledge of them.

Liability for Links
Our offer includes links to external third party websites. We have no influence on the contents of those websites, therefore we cannot guarantee for those contents. Providers or administrators of linked websites are always responsible for their own contents. The linked websites had been checked for possible violations of law at the time of the establishment of the link. Illegal contents were not detected at the time of the linking. A permanent monitoring of the contents of linked websites cannot be imposed without reasonable indications that there has been a violation of law. Illegal links will be removed immediately at the time we get knowledge of them.

Contents and compilations published on these websites by the providers are subject to German copyright laws. Reproduction, editing, distribution as well as the use of any kind outside the scope of the copyright law require a written permission of the author or originator. Downloads and copies of these websites are permitted for private use only. The commercial use of our contents without permission of the originator is prohibited.

Copyright laws of third parties are respected as long as the contents on these websites do not originate from the provider. Contributions of third parties on this site are indicated as such. However, if you notice any violations of copyright law, please inform us. Such contents will be removed immediately.


  • Texts, pictures, films and animations: © property of DIATEST Hermann Költgen GmbH (
  • Certificate "Ausbildungsbetrieb 2019": Darmstadt Chamber of Industry and Commerce (
  • Certificate „Auslandsaufenthalte während der Berufsausbildung“: Chamber of Commerce Frankfurt-Rhein-Main (
  • Magazine article „Diatest – the queen of roundness“, Magazine „Quality Today“, 1989
  • Picture "2017 Masters Cyclo-Cross World Championships": UCI (Union Cycliste Internationale), Aigle, CH (
  • Logo TÜV-Cert and certificate: TÜV Technische Überwachung Hessen GmbH (
  • Picture "VC-Racingteam Darmstadt", courtesy of Mr. Maximilian Eitler and the VC-Racingteam Darmstadt (
  • Picture „Sommerbahn-Meisterschaft auf dem DIATEST-Velodrom“: VC 1899 Darmstadt e.V., Rennsportabteilung
  • Picture "TdoT'23" Space - © Adobe Stock - mode_list
  • Picture Startpage "flag of Union Jack, uk england, united kingdom flag" - © Adobe Stock - donfiore





Certificate – The TÜV CERT Certification Body of TÜV Hessen - hereby certifies in accordance with TÜV CERT procedures, that DIATEST Hermann Költgen GmbH, Schottener Weg 6, D-64289 Darmstadt has established and applies a quality management system for Development, production and sale of mechanical and electronic measuring instruments for length measurement technology. An audit was performed, Report No . 4381 9075. Proof has been furnished that the requirements according to DIN EN ISO 9001 : 2015 are fulfilled.