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At 1st April 1948, Mr. Hermann Költgen, a disabled person, and his wife Erna set up the company together.
Sub-supplier of the company BUKO in Ober-Ramstadt.
Company’s domicile: Darmstadt, Darmstraße 9, Starting capital: DM 1.000,-- borrowed from his mother.

Registered patented trade name DIATEST

Move to new building in Stiftstraße 50 in Darmstadt

Extension to Stiftstraße 48, Darmstadt with boss, boss’s wife and 20 employees.
At this time several utility patents and patent applications are made.

Company moves into first large new building at Schottener Weg 6, Darmstadt

25 years of DIATEST

Already working in the export with world-wide reputation

In February 1974 Erna Költgen dies.

In November 1974 marriage with Sigrid Költgen.
In this period the responsibility is more and more taken over by Mr. Peter Zander.
High qualification and business thinking are decisive for his appointment as CEO.
The company develops very positively with his assistance.

DIATEST Gauges & Tools Inc. is founded in Chicago / U.S.A.

DIATEST (U.K.) Ltd. is founded in London

The death of Hermann Költgen strongly hits the company.

In the same year his widow Sigrid Költgen founds Hermann Költgen GmbH. Sigrid Költgen – shareholder & CEO – gives the company a solid base together with the CEO Peter Zander.

The expansion of the company is preconditioned. Trusting co-operation with our business partners and the production of high-quality measuring instruments lead to success.

Daughter Gabriela joins the company on July 1st, after having successfully finished her training as a commercial employee

On January 1st, academically trained engineer Mr. Klaus Orio joins the company as export manager.

He together with Astrid Junghans and Mr. Gösta Fehle, former export agent, successfully build up the export department at the factory within 6 months which has now worked independently since the 1st July, 1988.

In spring the automatic lathes and production of blanks are moved to Ober-Ramstadt because of lack of space.

Most modern CNC-machines are bought.

DIATEST-France is set up

DIATEST-Japan is set up.
The first trade relations with China are established.

DIATEST is certified according to DIN EN ISO 9001

The company is extended by the neighbouring estate. The automatic lathes are re-incorporated to Darmstadt.

An in-house waste plant is installed.

A new CNC-milling machine is supplied.
The administrative section is renovated inside and outside.
A new large training and show room is available.
All office working places are computerised and connected by an internal network.

After having put up the intranet, e-mail and internet are built up.
On May 10, the company gets a CNC-automatic lathe.

From May 14 to 17, DIATEST celebrates its 50th anniversary.
All representations are invited. Ceremony is on May 16, at Justus-Liebig-Haus, Darmstadt.

Scandinavia is calling: Foundation of DIATEST Sverige AB in Bromma (Sweden)

DIATEST FRANCE S.A.R.L. becomes subsidiary company and moves to Paris

After 25 years 250,000 DIATEST BMD plug gauges sold

For a better support of our customers in South America, DIATEST do BRASIL Ltda. was founded in Sao Paulo as headquarters

After successfully completing his studies in mechanical engineering, Florian Orio joins the company

Due to the relocation of the leading CONTROL trade fair from Sinsheim to Stuttgart, a completely new booth was implemented

In the DIATEST Velodrom, national and international cycling champions as well as Olympic participants were in the starting field. DIATEST has been promoting youth sports of the Velociped-Clubs 1899 Darmstadt e.V. (VCD) for many years and supports them in maintaining the race track - the DIATEST Velodrom.

The complete measuring system for bore measurement with fourth decimal place is ergonomic and easy to operate

Acquisition of 50% shares in COME Métrologie S.A.R.L. in Bonson, France

DIATEST Measuring Instruments (Beijing) Co. Ltd. is founded as a joint venture in Beijing, PRC

The DIATEST-Vertriebs-GmbH is founded in Darmstadt

DIATEST reaches its spatial limits.
An additional new building with larger production halls and a modern administration is planned.
Starting signal for the enlargement of the production hall 1 and construction of the new parking deck.

Dipl.-Ing. Florian Orio is entered in the commercial register as a further as a further CEO

Ground-breaking ceremony for 2nd construction phase - start of construction of the new production and office building in Darmstadt.
In front of our employees and numerous guests and dealers from Germany and abroad, the mayor of the city of Darmstadt and the president of the Chamber of Crafts honored the achievements of DIATEST in addition to CEO Dipl.-Ing. Klaus Orio. 

The new building with an additional 2,000 square meters of space for production and administration is in operation

Grand opening ceremony and workshops on the occasion of the completion of the new building complex

Presentation of the automated and robot-supported measuring cell for high-precision tactile measurement in the process, including digital measurement data transmission and evaluation.
Unique in the world of bore measurement!

70 years of DIATEST - Young / Dynamic / Innovative

DIATEST COME METROLOGIE S.A.R.L. starts its business operations in St.-Just St.-Rambert.
The company was born from a merger of DIATEST France and COME Métrologie.

Opening of the calibration room of quality classes 1 and 2 for quality assurance.
The latest measurement technology at the highest level is available here.

DIATEST was nominated for the Hessian Export Award, one of the three most successful export-oriented companies in Hessen!

 

In order to be even closer to the customer, the companies DIATEST-Vertriebs-GmbH and Werner Schober Präzisions-Messgeräte were united

First purely virtual "Open Day" (TdOT) at DIATEST, organised by the DIA-@cademy

The DIATEST IPM (solution for dynamic in-process measurement for quality assurance) is ready for use and is used in various production processes

We bid farewell to our Managing Director, Dipl.-Ing. Klaus Orio
1941 - 2022

DLC Black Diamond - After almost 40 years, our split-ball probes are no longer chrome-plated but coated with DLC (Diamond-Like-Carbon).

Due to worldwide supply difficulties caused by pandemics and other crises, DIATEST is investing large sums in its ability to supply:

New machines for a higher vertical range of manufacture
Increase of the material stock
Installation of its own hardening shop
In-house coating-line for DLC coating and calibration room

We produce electricity with the sun and save approx. 53 tonnes of CO₂ per year.
The solar modules deliver up to 100 kW peak.

For 75 years, the family business DIATEST Hermann Költgen GmbH has stood for quality, delivery reliability and fair partnership.

Innovation was the driving force behind DIATEST and is still decisive for our success today. Customers who choose our products acquire 75 years of experience and know-how at the same time.

We will continue to strive to expand our global leadership position in the field of high-precision measuring instruments and complete metrological solutions.

This success is only possible together with our globally committed representatives, customers and qualified employees.

We will continue on our successful path and assure you of a fair and reliable partnership in the future.