Arrangement for determining the errors the vertical axis of a su

Details Arrangement for determining the errors the vertical axis of a su Arrangement for determining the errors the vertical axis of a su

1980-09-30

1982-10-26

Punter, William H.

Optics: measuring and testing

By polarized light examination

With light attenuation

250231SE, 356139, 356147, 356150, G01B 1114, G01C 102, G01C 106, G01D 304

Patent

active

043559026

ABSTRACT:
The invention relates to an arrangement for determining the vertical axis of a surveying device including a horizontal and a vertical circle each being provided with an index. The two indexes are related to each other and the resulting departure, if any, is measured either visually or physically. By virtue of the inventional arrangement additional means for determining the vertical axis of a surveying device such as inclinometers are eliminated.

REFERENCES:
patent: 2837956 (1958-06-01), Schneider
patent: 3068741 (1962-12-01), Werner
patent: 3154626 (1964-10-01), Sisson
patent: 4136955 (1979-01-01), Aeschlimann et al.

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