Inclination measuring apparatus having a prism with associated l

Details Inclination measuring apparatus having a prism with associated l Inclination measuring apparatus having a prism with associated l

1985-05-02

1987-05-19

Henry, Jon W.

Optics: measuring and testing

Angle measuring or angular axial alignment

356249, 33366, 33377, 350286, G01C 920, G01B 1126, G02B 506

Patent

active

046662995

ABSTRACT:
An inclination measuring apparatus having a prism and a container having a liquid sealed therein for providing a liquid surface perpendicular to the direction of gravity. A member constructed from thermal conductive material is position under the liquid surface to maintain the liquid surface level in the presence of ambient temperature changes.

REFERENCES:
patent: T936004 (1975-07-01), Willis
patent: 3514192 (1970-05-01), De La Cierva
patent: 3655274 (1972-04-01), Craig
patent: 3659927 (1972-05-01), Moultrie
patent: 3784288 (1974-01-01), Toy
patent: 3838909 (1974-10-01), Fitzgibbons
patent: 3905707 (1975-09-01), Feist et al.
patent: 3910704 (1975-10-01), Richarme

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