4. Geometrical instruments
  5. Miscellaneous
  6. Light direction

Joachim Mainka

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Drafting machine head

Geometrical instruments – Miscellaneous – Light direction
Patent

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Optical surveying apparatus, such as transit, with artificial li

Optics: measuring and testing – Angle measuring or angular axial alignment – Relative attitude indication along 3 axes with photodetection
Patent

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Profile ID: LFUS-PAI-P-982896

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