4. Geometrical instruments
  5. Straight-line light ray type
  6. Structurally installed

John E. Briggs

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Triangulation rangefinder and sight positioning system

Optics: measuring and testing – Range or remote distance finding – Triangulation ranging with photodetection – but with no...
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Triangulation rangefinder for archers

Geometrical instruments – Straight-line light ray type – Structurally installed
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Profile ID: LFUS-PAI-P-409490

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