Compass having a fiber optic output

Details Compass having a fiber optic output Compass having a fiber optic output

1977-07-13

1979-02-20

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

With viewing aid

33355R, 116DIG26, 350 9624, G01C 1724

Patent

active

041399498

ABSTRACT:
A compass having a magnetic element pivotally mounted in a housing, the housing including a light source and one end of an array of fiber optic bundles and the element carrying a reflector and/or an aperture to selectively permit light from the source to reach a selected one or more of the fiber optic bundle ends within the housing in dependence upon the orientation of the element relative to the housing about the pivot axis of the pivotal mounting.

REFERENCES:
patent: 3349406 (1967-10-01), Perry et al.
patent: 3677619 (1972-07-01), MacKenzie
patent: 3905121 (1975-09-01), Takeda et al.

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