Transit for establishing 90 degree angles

Details Transit for establishing 90 degree angles Transit for establishing 90 degree angles

1990-11-20

1992-06-02

Evans, F. L.

Optics: measuring and testing

Angle measuring or angular axial alignment

Apex of angle at observing or detecting station

356144, 33276, G01B 1126

Patent

active

051181843

ABSTRACT:
A transit includes two identical transit elements oriented at 90.degree. with respect to each other. Each transit element includes an objective end and a viewing end and be focused on a distant point. The transit is mounted on top of an intersection of two elements, and the elements can be moved to be at a right angle with respect to each other. Once the right angle is set, other portions of a polygonaly figure, such as a rectangle or a square, can be set.

REFERENCES:
patent: 857688 (1907-06-01), Thorburn
patent: 1696508 (1928-12-01), Thorburn

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