Dr. Johannes Heidenhain GmbH is a privately owned enterprise located in Traunreut, Germany. Heidenhain manufactures numerical controls for machine tools, as well as mechatronic measuring devices for length and angle. Their linear and angle encoders are built for use in automated machines and systems, particularly in machine tools. The company began as a metal etching factory founded in Berlin by Wilhelm Heidenhain in 1889 that manufactured templates, company plaques, product labels, and scales. In 1928 Heidenhain invented the Metallur process. This lead-sulfide copying process made it possible for the first time to make exact copies of an original grating on a metal surface for industrial use. By 1943, Heidenhain was producing linear scales with accuracy of ± 15 µm and circular scale disks with accuracy of ± 3 angular seconds. More information...
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