4. Geometrical instruments
  5. Distance measuring
  6. Error compensation

Dr. Johannes Heidenhain GmbH

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Absolute interferometer measuring process and apparatus having a

Optics: measuring and testing – By particle light scattering – With photocell detection
Patent

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Adapter for coupling two shaft ends in a defined angular orienta

Joints and connections – Distinct end coupler – Plural opposed sockets
Patent

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Angle measuring arrangement

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Angle measuring device with correction grid

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent

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Angle measuring instrument and its use

Geometrical instruments – Gauge – Angle
Reexamination Certificate

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Profile ID: LFUS-PAI-P-3504

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