Optics: measuring and testing – Angle measuring or angular axial alignment – Apex of angle at observing or detecting station
Patent
1982-08-24
1986-03-18
Rosenberger, R. A.
Optics: measuring and testing
Angle measuring or angular axial alignment
Apex of angle at observing or detecting station
33283, G01C 110
Patent
active
045764786
ABSTRACT:
A pendulum is mounted between an eyepiece and a fixed reflector facing a movable reflector carried by an adjustment member. First and second sight guides are mounted on the pendulum in alignment with a longitudinal axis which is perpendicular to the axis of the pendulum and this longitudinal axis is movable into coincidence with the axis of the eyepiece. The axis of the eyepiece is thus aligned horizontally, by gravity, without having to view the horizon through the eyepiece.
REFERENCES:
patent: 544212 (1895-08-01), Croskery
patent: 2411870 (1946-12-01), Chauvet
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