Geometrical instruments – Straight-line light ray type – Level
Patent
1993-12-02
1996-10-22
Will, Thomas B.
Geometrical instruments
Straight-line light ray type
Level
33299, 33354, 33DIG21, G01C 500
Patent
active
055664598
ABSTRACT:
A laser beam device to perform sightings and tracings which makes use of a calibrated tube inside which resides a laser emitting component of which the optical emitting axis coincides with the mechanical axis of the tube, a mirror securely mounted at the end of the tube and set at a 45.degree. angle from the incident laser beam, an end piece mounted and rotating on the end of the tube which includes a number of ports which can be brought to be coaxially centered in the reflected beam by simply rotating the end piece and a number of optical systems respectively mounted in the ports. The device provides flexibility without requiring additional set-up.
REFERENCES:
patent: 3471234 (1969-10-01), Studebaker
patent: 4544236 (1985-10-01), Endo
patent: 5121220 (1992-06-01), Nakamoto
Fincham Eric
Will Thomas B.
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