Laser apparatus for projecting a narrow beam of light as a refer

Details Laser apparatus for projecting a narrow beam of light as a refer Laser apparatus for projecting a narrow beam of light as a refer

1972-06-21

1976-12-14

Corbin, John K.

Optics: measuring and testing

Angle measuring or angular axial alignment

356153, 356248, 356255, G01B 1126, G01C 100, G02B 2732

Patent

active

039972674

ABSTRACT:
Apparatus for providing a reference line for surveying, pipelaying and related purposes includes a laser source, means for automatically leveling the beam from the laser source, regardless of the orientation of the entire instrument, and means for deflecting the leveled beam to a desired angle relative to horizontal, also regardless of the orientation of the entire instrument.

REFERENCES:
patent: 2997912 (1961-08-01), Mikic
patent: 3471234 (1969-10-01), Studebaker
patent: 3528424 (1970-09-01), Ayres
patent: 3612700 (1971-10-01), Nelson
patent: 3635565 (1972-01-01), Colson
patent: 3652166 (1972-03-01), Bessko et al.
patent: 3653384 (1972-04-01), Swope
patent: 3684381 (1972-08-01), Zoot
Wallace, K. M., "Maser Surveying," Surveying & Mapping vol. 22, No. 4, 1962 [TV Berlin 8Z1415], pp. 550-554.

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