Precise at any point in the world.

KOBA – Kolb und Baumann – Hersteller für Präzisions-Messzeuge - Unternehmen - Familienunternehmen

The family business in Aschaffenburg.

Kolb & Baumann was founded 70 years ago by August Baumann and Adolf Kolb. From the beginning, the production of gauge blocks was the main task. At first this was done by hand, later lapping machines were purchased or built by the company. In addition, the development of gauge block accessories began, in the course of which, for example, the KOBA gauge block holder was patented. 1962 Dipl.-Ing. Adolf Baumann joined the company. Thanks to his intensive commitment, KOBA became a globally active company that is recognized in the industry.
In 1979, Kolb & Baumann becomes the 8th calibration laboratory in Germany to be accredited by the Physikalisch Technische Bundesanstalt (PTB). Today, the accreditation for the measurand “length” includes gauge blocks up to 1,000 mm nominal dimension, measuring equipment, gauges and plane glass plates.
In 1985, the development and manufacture of calibration standards for coordinate measuring technology was established as a further field of activity. KOBA is the only manufacturer worldwide to offer one-, two- and three-dimensional test pieces for tactile coordinate measuring machines. The latest member of this product group is the optical calibration standard “KOBA-optima” for checking and traceability of photogrammetry and theodolite measuring systems. KOBA distributes worldwide to more than 70 countries and is supplier for gauge blocks and calibration standards to numerous state institutes.
At the Aschaffenburg site, KOBA currently employs about 35 people, most of whom work in production. KOBA is an independent family-owned company. The continuation as a medium-sized family business is guaranteed by the entry of Dipl.-Bw. (BA) Alexander Baumann-Rassokhatzkyi joining the management: “We will continue to do everything in our power to supply our customers with high quality German products at all times. This tradition is our obligation for the future.”

ISO 9001.

We are certified

DIN EN ISO/IEC 17025.​

We are a DAAKS accredited calibration laboratory.

We set the standard for customers worldwide

Our customers have clear requirements: the fulfillment of all quality demands on the product defined by standards. That is why we do our best every day to meet these individual requirements. We also meet the confirmed deadlines and provide you with courteous and competent customer service within our opening hours. From inquiry to delivery we are a strong partner at your side.

Your satisfaction is our commitment

Therefore, the compliance of our products and services with the above-mentioned quality requirements of the customer is the ultimate corporate goal

Thorough and expeditious customer service

Promised deadlines are met. In a joint discussion, we clarify your desired date, define availabilities and service intervals.

Ensuring the achievement of objectives

The company management creates and ensures the objective framework conditions for the quality-oriented work of each employee in the form of suitable workplaces, machines, tools, devices and testing equipment. Each team member in a management function forwards information between the decision-making levels and thus contributes to a continuous improvement of internal communication. This benefits you as a customer.

Everyone is part of the result

It is the responsibility of every employee to perform flawless work. Quality risks are reported and remedied directly when they are identified. In this way, we reliably maintain our quality standards.

Precision from the start

This not only improves quality, but also reduces costs. Quality increases profitability. For every employee – whether in sales, purchasing, design, work preparation, production, testing or shipping – error prevention takes precedence over error correction takes precedence over troubleshooting.

Quality is teamwork

Our suppliers are systematically evaluated and selected with regard to product quality, adherence to deadlines, incorrect delivery and quantity identity. In this way, we ensure that your requirements are guaranteed to be met.

Verified quality standard

The collection of internal quality guidelines is our Quality-Management-Manual. All specifications contained therein are implemented and realized by the managers and by all employees in sales, purchasing,

Our products make the difference

Each of our products is made by KOBA and stands for precise manufacturing in Germany – tested according to quality standards. Thus we create the basis for accuracy and quality in your production.

Standards for 3-D coordinate metrology

Test specimens for measuring equipment

Gauge Blocks

Accessories for Gauge Blocks

Gauges and Setting Standards

Get in contact with us.

Dipl.-Bw. (BA) Alexander Baumann-Rassokhatzkyi
Tel.: +49 06021-3463-0


Kolb & Baumann GmbH & Co. KG
Factory for precision measuring tools

Daimlerstraße 24
D-63741 Aschaffenburg

Telefon: +49 6021 3463-0
Telefax: +49 6021 3463-40

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Our success stories: Selected project references of highest precision.

Our relentless commitment to the highest precision in every step of work defines us, but nothing surpasses our pursuit of complete customer satisfaction. The fact that we can excite renowned customers with our work fills us with great pride. Discover who already relies on our expertise.