Ultra-Precision Standards. Made in Germany — Trusted Across the US.

Gauge blocks, calibration standards & high-precision measurement tools for the most demanding industries.
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The Benchmark for Global Precision

KOBA develops and manufactures high-precision measuring tools that meet the highest international quality standards — used in aerospace, automotive, medical technology and research labs worldwide.

Ready to Talk Precision?

If you’re looking to strengthen your measurement processes, our team is ready to support you. Whether you need a tailored quote, expert guidance or technical assistance, KOBA provides the precision and expertise to keep your operations running accurately and reliably.

High-Precision Measuring Tools & Standards

“Quality is the art of permanently meeting customer`s requirements and exceeding them through continuous improvement with the most efficient use of resources.” (Torben Stutzke)

For us this means: our precision starts where others stop. We sell our products worldwide for your precision work in the μ-range. This high quality pays off for you and the higher investment is amortized in a short time. Our wide product range and individual customer solutions leave nothing to be desired.

Standards for 3-D coordinate metrology

Test specimens for measuring equipment

Gauge Blocks

Accessories for Gauge Blocks

Gauges and Setting Standards

Calibration service

Aerospace & Defense
Automotive & EV
Medical Device Manufacturing
Semiconductor & Optics
Industrial Metrology & QA Labs
Research & Government Institutes

Simple. Reliable. ISO-Compliant.

Complete CMM Calibration

Standards and Test Pieces for monitoring of inspection and test instruments.
The calibration bodies, test sets and all other products support you in monitoring optical and tactile CMM’s.

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Step Gauge KOBA-step®

One-dimensional test specimen with plane-parallel measuring surfaces along a measuring line.
Field of application:
Calibration, monitoring and traceability of tactile coordinate measuring machines.

KOBA - Ball Bar

One-dimensional, demountable test specimen with spherical probing elements.
Field of application:
Monitoring of large-volume coordinate measuring machines, e.g. column and gantry
measuring machines.

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Made in Germany: Reliability and discretion

Customers benefit from Kolb & Baumann’s genuine German precision manufacturing, which is
renowned worldwide for its high quality, reliability, and technical excellence. As a fourth-generation
family business, we combine traditional values with state-of-the-art manufacturing technology to
deliver components with micrometer precision and exceptional process reliability. Our in-depth
vertical integration, strict quality controls, and experience in supplying renowned defense and high-
tech industries give American companies access to premium components “Made in Germany” that
guarantee stability, durability, and consistent performance. For US customers, this means maximum
precision, maximum reliability, and a partner who takes responsibility seriously.

Frequently Asked Questions

KOBA manufactures high-precision gauge blocks, test specimens for measuring equipment, standards for 3-D coordinate metrology, accessories for gauge blocks, and gauges & setting standards.

KOBA is a family-owned company based in Aschaffenburg, Germany. The company states it has been manufacturing gauge blocks for more than 70 years
Yes. KOBA operates a calibration laboratory accredited by the German accreditation body Deutsche Akkreditierungsstelle GmbH (DAkkS) according to DIN EN ISO/IEC 17025.  The accreditation number is D-K-15077-01-00.
KOBA gauge blocks are manufactured according to DIN EN ISO 3650.  They are produced in steel, ceramic and carbide, and are available in standard sizes and custom sets.
KOBA offers calibration services (via its in-house DAkkS-accredited lab) and can calibrate a variety of gauges and measuring equipment (thread gauges, plug gauges, ring gauges, etc.).