Device for aligning a laser leveling instrument along a building

Details Device for aligning a laser leveling instrument along a building Device for aligning a laser leveling instrument along a building

1992-10-09

1994-07-19

Evans, F. L.

Optics: measuring and testing

Angle measuring or angular axial alignment

33DIG21, 359834, G01C 500

Patent

active

053313950

ABSTRACT:
An apparatus for aligning a laser leveling instrument along a building line can remain standing unchanged on its base throughout both horizontal and vertical leveling operations. The light source is located in the base of the instrument. The instrument head can be swung through 90.degree. and houses a rotating prism which generates the vertical plane, and an adaptor. The adaptor includes a prism for deflecting the light from the source into the rotating prism and a triple prism which, when brought into the light path, deflects the light coming from the base perpendicular to the generated vertical plane, projecting it onto the building line.

REFERENCES:
patent: 4912851 (1990-04-01), Rando et al.
patent: 4988192 (1991-01-01), Knittel
patent: 5144486 (1992-09-01), Hart
patent: 5144487 (1992-09-01), Hersey

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