Laser beam survey instrument having a tiltable laser beam axis a

Details Laser beam survey instrument having a tiltable laser beam axis a Laser beam survey instrument having a tiltable laser beam axis a

1995-12-18

1997-06-03

Turner, Samuel A.

Optics: measuring and testing

Fiducial instruments

Artificial reference

356349, 33291, G01B 1126

Patent

active

056360185

ABSTRACT:
According to the present invention, fixed tilt detectors are fixed in planes crossing perpendicularly to each other of shaft center of a laser projector, and tilting tilt detectors are mounted on a plate, which is tiltable with respect to shaft center of the laser projector. The laser projector is leveled in such manner that the fixed tilt detectors indicate horizontal direction or tilting tilt detectors aligned with the fixed tilt detectors indicate horizontal direction, and horizontal reference plane is obtained. The tilting tilt detectors are tilted with the fixed tilt detectors as reference, and the laser projector is leveled so that the tilted tilting tilt detectors indicate horizontal direction, and reference plane tilted at an arbitrary angle is obtained.

REFERENCES:
patent: 4062634 (1977-12-01), Rando et al.
patent: 4629321 (1986-12-01), Hart et al.
patent: 4751782 (1988-06-01), Ammann
patent: 4854703 (1989-08-01), Ammann
patent: 5485266 (1996-01-01), Hirano et al.

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