Device for aligning a geodetic instrument over a defined positio

Details Device for aligning a geodetic instrument over a defined positio Device for aligning a geodetic instrument over a defined positio

1991-03-08

1992-11-03

Haroian, Harry N.

Geometrical instruments

Straight-line light ray type

33250, 33299, 33292, 33228, G01B 302

Patent

active

051597608

ABSTRACT:
A device for centering geodetic instruments over defined ground marks or defined position marks is described, in which a visible light beam is projected onto a ground mark or position mark. In an advantageous additional feature, the light beam of the invention can be used to measure the distance between the sighting line of the geodetic instrument and the sighted ground mark or position mark.

REFERENCES:
patent: 3471234 (1969-10-01), Studebaker
patent: 4171907 (1979-10-01), Hill et al.
patent: 4183667 (1980-01-01), Denton
patent: 4888881 (1989-12-01), Dudley

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