Device for determining the inclination of a plane with respect t

Details Device for determining the inclination of a plane with respect t Device for determining the inclination of a plane with respect t

1988-05-16

1990-05-08

Will, Thomas B.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

33 1N, 33 1L, 25023114, G01C 906

Patent

active

049226207

ABSTRACT:
The present invention relates to a device for determining the inclination of a plane with respect to a theoretical horizontal plane, including a box-like body defining a base plane. An inclination detector element is rotatably associated with the box-like body; light detectors determine the position of the detector element with respect to the base plane; a display indicates the inclination of the base plane relatively to a theoretical horizontal plane. The light detector and the display are powered by batteries and operated by a switch.

REFERENCES:
patent: 2747797 (1956-05-01), Beaumont
patent: 3233235 (1966-02-01), Wright
patent: 3584387 (1971-06-01), Sturm
patent: 4159577 (1979-07-01), Bergkvist
patent: 4253242 (1981-03-01), McInerney
patent: 4467527 (1984-08-01), North et al.
patent: 4492029 (1985-01-01), Tanaka et al.
patent: 4500392 (1985-02-01), Slaten
patent: 4606133 (1986-08-01), Mills
patent: 4716534 (1987-12-01), Baucom et al.
patent: 4964584 (1987-09-01), Mills

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