Diatest Hermann Költgen GmbH is a German precision engineering company headquartered in Darmstadt. Founded in 1948, the company has established itself as a global specialist in the field of high-precision dimensional metrology. The brand is recognized for its focus on internal measurement technology, providing solutions for checking bores, grooves, and complex internal geometries where high accuracy and repeatability are required.
The company’s product portfolio centers on mechanical and electronic measuring instruments designed for quality control and production monitoring. Key product groups include:
Diatest products are utilized primarily in sectors where tight tolerances are critical to product performance and safety. These industries include:
The market for high-precision dimensional metrology includes several established international manufacturers that provide similar internal measuring solutions:
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