Surveying machine for construction work

Geometrical instruments – Straight-line light ray type – Multisight line

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Details

33227, 33DIG21, 356138, G01B 1126

Patent

active

052187705

ABSTRACT:
In the surveying for construction work carried out prior to actual construction to set up new stations serving as references of the construction work, measurements to set up various angles are contemplated, but it will be readily understood, from the viewpoint of many buildings or structure being based on the right angles, that most angle measerments are made to set up the right angles. A surveying machine for construction work is provided with a rotating projector adapted for rotational projection of at least a pair of laser beams in planes being perpendicular to each other so that new stations in a vertical plane, new station in another vertical plane being perpendicular to the first-mentioned vertical plane or new stations in a horizontal plane may be easily set up merely by observing the pair of laser beams intersecting perpendicularly to each other.

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