Device for determining angle relationships of or between planes

Details Device for determining angle relationships of or between planes Device for determining angle relationships of or between planes

1977-01-25

1978-06-06

Aegerter, Richard E.

Geometrical instruments

Miscellaneous

Light direction

33 1E, G01C 2120

Patent

active

040927792

ABSTRACT:
A device for determining angle relationships of or between planes, such as in geological structures, having a first member having on a planar surface thereof a family of concentric circles indicative of angles from the range 0.degree. to 90.degree., the circles each being indicative of an angle that is the complement of the half-angle of a respective one of a family of notional right circular cones of equal height based on the surface concentrically of the circles and having a diameter corresponding to that of its circle; and means mounted on and extending across the surface, the means being rotatable with respect to the circles to permit correlation between (a) the angle of inclination of a plane in one direction as indicated by a circle and (b) the inclination of that plane in another direction, or another direction in which a particular inclination of the plane occurs.

REFERENCES:
patent: 2027368 (1936-01-01), Bockius
patent: 2381836 (1945-08-01), Noble
patent: 2717448 (1955-09-01), Lubin et al.
patent: 3393457 (1968-07-01), Freda

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